The wind blowing a sand dune is an example of _________.

Answers

Answer 1

Final answer:

The wind blowing a sand dune exemplifies sediment deposition by wind, commonly observed in deserts and coastal areas, and involves processes that create well-sorted, often red colored sands. This phenomenon is also significant in planetary science, evidenced by features on Mars reshaped by wind, such as large dune fields and yardangs aligned with the wind direction.

Explanation:

The wind blowing a sand dune is an example of sediment deposited by wind, which is a process often observed in deserts and coastal regions. Sand dunes formed by wind deposition are typically composed of well-sorted sand, which can be red in color due to the oxidation of iron-bearing minerals. This type of sediment transport is due to the variable energy of the wind, which can range from gentle breezes capable of slowly shifting grains of sand to powerful gusts that rapidly reconfigure the dune landscape.

Studying the effects of wind on sand dunes is not only relevant to Earth but also to planetary science, as seen with the exploration of surface features on Mars. Here, wind plays a pivotal role in reshaping the landscape, creating features such as large dune fields, intricate patterns caused by dust devils, and exposing underlying darker materials that give rise to contrast in coloration on the Martian surface. The dynamic nature of wind erosion and deposition is evident in the existence of yardangs, ridges that are aligned with the dominant wind direction and carved by persistent, strong winds.

In summary, the movement of a sand dune by wind is a clear illustration of the power of natural forces to shape and alter landscapes on Earth and other celestial bodies like Mars, particularly in areas characterized by a scarcity of water and vegetation that might otherwise anchor the surface material.


Related Questions

how do atoms form a new substance

Answers

Atoms form a new substance by bonding with different atoms.

For example, hydrogen atoms and oxygen atoms bond to form H2O as per this equation:

2H2 + O2 ---> 2 H2O

To understand how to hydrogen and oxygen atoms form water you can write that as:

2 H - H + O - O ---> 2 H - O - H

Each hypen represent a chemical bond.

What is happening is that the H - H atoms and the O - O separate and  bond with different atoms: H bonds to O which in turn bonds to other H.

Also, you have to know that chemical bonds are the result of interaction between the electrons of the valence shell of electrons of each atom. This is,  valence electrons from O interact with valence electrons of H to form the bond H - O.

The interaction may be in different ways depending on the properties of the atoms: the kind of bonds known are metallic, ionic and covalent.


convert 25 kilometers to meters

Answers

25,000 meters is youre answerr
There are 1 kilometers in 1000 meter, and so

25 km x 1000 (conversion unit) = 25000 (meters)

your answer is 25000 meters

hope this helps 

Formula Mass for AgNO2

Answers

153.88 g/mol is the formula mass

The formula mass of AgNO₂ is approximately 153.88 amu.

To calculate the formula mass for AgNO₂, add the atomic masses of silver (Ag), nitrogen (N), and oxygen (O). Silver has an atomic mass of 107.87 amu, nitrogen is 14.01 amu, and oxygen is 16.00 amu. Since there is one nitrogen atom and two oxygen atoms in nitrite (NO₂), you compute the mass of NO₂ by adding the atomic mass of nitrogen to twice the atomic mass of oxygen.

Formula mass of AgNO₂ = atomic mass of Ag + atomic mass of N + (2 × atomic mass of O)
= 107.87 amu + 14.01 amu + (2 × 16.00 amu)
= 107.87 amu + 14.01 amu + 32.00 amu
= 153.88 amu

Therefore, the formula mass of AgNO₂ is 153.88 amu.

The complete question is:

What is the formula mass of AgNO₂?

What characteristic of the molecule is important for this force to be effective in bonding?

Answers

Van der Waals forces' is a general term used to define the attraction of intermolecular forces between molecules. The bigger the molecule, the bigger the force. 

Answer:

Van der Waals forces' is a general term used to define the attraction of intermolecular forces between molecules. The bigger the molecule, the bigger the force.

Explanation:

How many newtons are necessary for a 6,000 g mass to accelerate at a rate of 2.5 m/s2.

Answers

the answer is 15000 Newton's
hope this helps!

Identify each substance in the following word equation as a reactants or product limestone—heat ——>lime +carbon dioxide

Answers

Limestone is Reactant ... Lime + Carbon dioxide are the products ... Heat is the condition in which the reaction takes place

Explanation:

When we write a chemical reaction equation then species present on the left hand side represents the reactants. Whereas species present on the right hand side represent the products.

For example, [tex]Limestone + Heat \rightarrow Lime + Carbon dioxide[/tex]

Here, limestone is the reactant whereas lime and carbon dioxide are the products.

Thus, we can conclude that limestone is the reactant. And, both lime and carbon dioxide are the products.

True or false forces on earth are different from those elsewhere in the universe

Answers

False, other planets have things we have not discovered yet, but for one thing for sure there are storms and hurricanes on other planets as well.

nylon is a polymer which is termed as

Answers

Nylon is named as the most useful synthetic material. Nylon belongs to a family of materials called "polyamides."

Answer:

Nylon is named as the most useful synthetic material. Nylon belongs to a family of materials called "polyamides."

Explanation: pls mark me brainiest

Which of these is not a challenge an organism encounters

Answers

staying healthy
 that is the answer

Which statement best describes the difference between a physical change and a chemical change

Answers

physical change happens alone without adding chemical but by doing things  but you add chemicals and other things to have chemical change

The best statement describing the difference between a physical change and a chemical change is that a physical change involves a change in the state of matter, while a chemical change results in forming a new substance. Correct option is: B.

The difference between a physical change and a chemical change can be best described with the following statement:

B. A physical change is a change from one state of matter to another; a chemical change results in a new substance formed.

Physical changes involve changes in the state of matter (e.g., ice melting into water, water evaporating into steam) without altering the chemical composition of the substance.

On the other hand, chemical changes involve breaking and forming chemical bonds, resulting in the formation of new substances with different chemical properties (e.g., hydrogen and oxygen reacting to form water).

Examples of physical changes include melting, freezing, condensation, and evaporation. Examples of chemical changes include combustion, oxidation, and reactions that produce gas or precipitate.

Complete Question: -

Which statement best describes the difference between a physical change and a chemical change?
A. A chemical change results in a new element being formed, and a physical change results in a new compound being formed.
B. A physical change is a change from one state of matter to another; a chemical change results in a new substance formed.
C. A chemical change does not result in a new substance being formed, whereas a physical change does.
D. A physical change produces a new element, and a chemical change results in a bond breaking between atoms.

Justine observed that the water level in a dish placed on the window sill decreased after a few days, and vapor formed. What best explains that she observed a physical change? Vapor can be easily condensed back to form water. Water and its vapor react with substances in different ways. The molecular composition of water changed when the water level decreased. Bonds between hydrogen and oxygen broke when the water level changed.

Answers

Physical change, heat caused this.

Water molecules that only vibrate are in solid form. If heat energy is added, the molecules will speed up their vibrations until they can break loose from the organized pattern of a solid and begin to slide over each other, changing to liquid state. If more heat energy is added, the molecules will speed up more and move randomly in all directions as a gas/vapor. Removing heat energy will reverse these changes.

yes the answer would be A. Vapor can be easily condensed back to form water. I know because I took this exam and had this question too.

is insulating ability a chemical property or physical?

Answers

The insulating ability of a substance is a physical characteristic and not a chemical one. A physical property is a characteristic that distinguishes one type of matter from the other and can be observed without changing the identity of the substance. A chemical property describes how one substance changes into another in a chemical reaction. 

Final answer:

The insulating ability is a physical property because it can be observed and measured without altering the chemical identity of a substance. This property is related to a material's structure and does not involve chemical changes when being measured.

Explanation:

The insulating ability of a material is considered to be a physical property because it can be observed and measured without changing the substance's chemical identity. When we talk about a material's insulating properties, we're referring to its ability to prevent the transfer of heat or electricity. This is directly tied to the material's physical structure and composition, and it doesn't involve a substance undergoing a chemical reaction or changing into a new substance.

Physical properties include characteristics such as color, density, hardness, and melting and boiling points, which can all be measured without causing a change to the material's composition. In contrast, chemical properties involve a material's ability to undergo a chemical change. Examples of chemical properties include reactivity with acids, flammability, and the ability to rust.

The table lists the chemical formulas or symbols of a few common substances. Which two substances are compounds? A) aluminum and iron B) iron and sodium chloride C) carbon dioxide and aluminum D) sodium chloride and carbon dioxide

Answers

D is the correct answer

every other option contains an element

Each elements, molecules and compounds have their own formula to identify them. The two compounds in the given lists are sodium chloride and carbon dioxide.

What are compounds?

Compounds are chemical substances formed by the combination of two or  more different elements. For example water is a compound formed from two hydrogens and one oxygen atom.

Combination of same atoms forms molecules but not compounds. Sodium, iron, aluminum  ets are single atoms and not compounds. There are different types of compounds such as ionic compounds, covalent compounds, coordination compounds etc.

The compounds are classified based on their bond type, composition etc. sodium chloride (NaCl) os an ionic compound of sodium and chlorine. Similarly carbon dioxide is a covalent compound formed from carbon and oxygen atoms.

Hence, the two compounds in the given lists are sodium chloride and carbon dioxide.Thus, option D is correct.

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What happens to the speed of molecules in water vapor when it condenses to form a liquid?

Answers

They slow down, i may be wrong
When water vapor condenses it changes from a gas to a liquid. During the condensation the speed of molecules is lower, which means that the molecules slow down and their attractions bring them closer together. 
Also, making water vapor colder increases the rate of condensation. The rate of condensation depends on the temperature.

which of these id an indication that a chemical reaction has occurred?

A) formation of a gas

B) boiling of a substance

C) melting of a substance

D) freezing of a substancd

Answers

Bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
I think the answer is B

is sodium hydroxide dissolves in water a physical change

Answers

Yes, because when something is desolated in water, it can be undone. If it couldn't be undone, then it would be chemical.

Identify the compounds that can be deprotonated by −OH

Answers

HELP PLEASE!! 

What are some compounds that are made out and a simple molecule?
( Please something else rather than water! )

And what does it look like?
Chemical formula?
Compound name?

PLEASEE HELPP!! THANK YOU TO THE HELPERS!

The compounds that can be deprotonated by −OH are formic acid and hydrogen sulfide.

What is Deprotonation?

Deprotonation may be defined as the process of elimination of a proton from a Bronsted-Lowry acid in an acid-base reaction. Deprotonation does not refer to the ejection or removal of a hydride ion (H-). The process of deprotonation actually removes a +1 charge from a chemical compound.

Formic acid (HCOOH) and hydrogen sulfide (H2S) is typically compound that can be deprotonated through the mechanism of deprotonation.

Such types of compounds are easily ionized in the forms of ions like HCOO- and H+. The deprotonation of such compounds is facilitated by the delocalization of protons to other instable form.

Therefore, the compounds that can be deprotonated by −OH are formic acid and hydrogen sulfide.

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What is the empirical formula for a molecule containing 46.8% Si and 53.2% O?

Answers

I did not remember the molar mass so you need to find them and input it then use the setup and solve

Answer:

SiO2

Explanation:

a p e x

who further developed Democritus's early contributions to the atomic theory by proposing that each chemical element has its own kind of atom?

Answers

John Dalton in the early 1800's developed Democritus's theory of atoms to show that different elements have different atoms. Also, the atoms of one type of element are all the same. Also he found that elements combine to from compounds. 

The following neutral atoms each have 8 places for electrons in their outermost shells.

Which atom will tend to lose rather than gain 1 or more valence electrons when forming an ion?

a. Li with 1 valence electron
b. O with 6 valence electrons
c. Ne with 8 valence electrons
d. F with 7 valence electrons

Answers

c. ne with 8 valenc3 electrons

Answer:

a. Li with 1 valence electron

Explanation:

For this it is necessary to see the electronegativity of this atoms. The electronegativity is the force or tendency that has an atom to attract electrons, so the atom who has the lower value of electronegativity is the one that will tend to lose rather than gain electrons.

The electronegativity of these atoms is:

Li – 0.98

O – 3.44

F – 3.98

Ne is a noble gas so has no tendency to gain nor lose electrons

which scientific tools are used by life scientists

Answers

microscopes, balances,scales

when driving a truck , is fuel crucial why or why not ?

Answers

Yes because you have to use fuel to drive that's my guess
Yes because you need gas so your truck can run

Within each biome how can the environment be organized into levels from complex to simple

Answers

Within each biome, the environment is organized into levels from complex to simple in the following order: ecosystem, community, species, and population. A biome represents a large area defined by abiotic factors. An ecosystem consists of all organisms in an area and their environment. A community is a group of organisms from different species in an area. A population is a group of organisms of the same species in an area.

Final answer:

Ecological organization ranges from the biosphere to biomes, ecosystems, communities, populations, and individuals. Biomes are large-scale environments with specific climates affecting vegetation and wildlife, organizing life in nested hierarchies.

Explanation:

In ecology, the environment can be organized into nested ecological hierarchies which, from the most complex to the simplest, are as follows: the biosphere, biome, ecosystem, community, population, and individual. The biosphere encompasses all living beings and all of their environments on Earth.

A biome is a large-scale environment, categorized primarily by characteristic vegetation and climate, and consists of many ecosystems. Each ecosystem includes a community and its non-living environment. Within an ecosystem, a community represents the sum of all living organisms residing in the same area.

This includes many populations, which are groups of individuals of the same species living in an area. Lastly, the individual is a single organism, the most basic unit in ecological organization.

Different biomes on Earth range from tropical rainforests to Arctic tundra, each distinguished by unique temperature ranges and precipitation patterns which influence the vegetation and animal life suited for those conditions.

After you add water to the sand-salt mixture what happens when you pour it through a filter??

Answers

I think when you mix sand, salt and water, salt will dissolve in the water and sand will not. When you about to filtrate the mixture, sand will be left in the filter paper, and the salt solution will pass through. If you wish to separate salt from water, just do evaporation. 
The water with the salt dissolved it it will go through filter and the the sand will not. So, the sand and salt will separate

Which expression of distance uses SI units?
A.
30 miles
B.
16 kilograms
C.
24 feet
D.
500 meters

Answers

SI stands for International system of units. Metre is a conventional unit of measuring distance.

Thus, option D is correct.

What is SI unit?

The International system of units contains the base units for quantifying any object, quantity or a substance.  The standard unit for measurement is the same world-wide.

It remains unchanged and is accepted universally. SI units remains the same in any language, in any field or area and in any condition.

SI unit is taken as the quantity of need. Any derived values are not included in SI units.

There are seven standard units included in SI system. SI units are devised for measurement of time, mass, length, temperature, current etc.

Using SI unit for measurement provides accuracy and consistency. The problem could be viewed in one dimension by all and thus solved appropriately with standard measurements.

Therefore, SI unit forms a fundamental unit for quantification in metric system.

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A neutral chlorine atom has 17 protons and 18 neutrons. How many electrons does it have?
A. 16
B. 17
C. 18
D. 19


(And if you want please explain how you get the answer.)

Answers

The atom has as many electrons as protons.
The correct answer is b) - 17 electrons.

:)

Answer : The correct option is, (B) 17

Explanation :

Atomic number is defined as the number of protons or number of electrons.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and number of neutrons.

Number of neutrons = Mass number - Number of protons

As we are given that:

Number of protons in chlorine atom = 17

Number of neutrons in chlorine atom = 18

For neutral atom :

As, Atomic number = number of protons = number of electrons

So, Number of electrons in chlorine atom = Number of protons = 17

Hence, the correct option is (B) 17

What is the difference between Spring Water and Alkaline water ?

Answers

spring water is natural water and alkaline water is from tap water. hope that helped
Alkaline water is water that is less acidic than regular tap water, and spring water is water you would find in a water bottle that may not have been treated or purified.

What best describes the degree to which a material can transmit Heat A:melting point B:boiling point C: thermal conductivity D: electrical conductivity

Answers

Your answer is going to be C
C. Thermal Conductivty

A laboratory manual gave precise instructions for carrying out the reaction described by the chemical equation, C2H6O + O2 C2H4O2 + H2O. It stated that if you bubble oxygen gas through a solution containing the reactant for 24 hours then the yield of C2H4O2 would be 7.50% of the theoretical amount. If you desire to produce 700. grams of the C2H4O2 in a single batch, how many kg of C2H6O should you begin with?

Answers

C2H6O + O2 ---> C2H4O2 + H2O

using the molar masses:-
24+ 6 + 16 g of C2H6O  produces 24 + 4 + 32 g C2H4O2    (theoretical)
 46 g produces 60g 

60 g C2H4O2 is produced from 46g C2H6O
1g      .     .................................46/60 g 
 700g     .................................    (46/60) * 700  Theoretically

But as the yield is only 7.5% 

the required amount is    ((46/60) * 700 ) / 0.075 =  7155.56 g 

=  7.156 kg to nearest gram.  Answer




which element is most reactive sodium,magnesium, or aluminum and why?

Answers

Magnesium would be more reactive.
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