Describe the theory of plate tectonics

Answers

Answer 1

Answer:

Answer:

The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.

Explanation:

From Google

Related Questions

Which energy transformation occurs when anelectrolytic cell is in operation? (1) chemical energy → electrical energy (2) electrical energy → chemical energy (3) light energy → heat energy (4) light energy → chemical energy
The elements in each column have ___________
What happens in a reduction half-reaction?elements gain electronselements lose electronsoxygen is addedoxygen is lost
Suppose that a substance in a beaker is heated over a burner in a science lab. Which observation would most likely indicate that a chemical change has occurred in the substance?1) If the substance is a liquid or solid, an increase in temperature would indicate a chemical change.2) If the substance is a liquid, a change of some of the liquid to gaseous form would indicate a chemical change.3) If the substance is a solid, a change of some of the solid to liquid form would indicate a chemical change.4) If the substance is a liquid or solid, the production of an odor would indicate a chemical change.
__________ refers to the total energy of a system.

Consider the following reaction: CO(g)+2H2(g)⇌CH3OH(g). The reaction between CO and H2 is carried out at a specific temperature with initial concentrations of CO = 0.29 M and H2 = 0.51 M. At equilibrium, the concentration of CH3OH is 0.14 M. Find the equilibrium constant at this temperature.

Answers

Answer:

please check image and explanation

Explanation:

First write the balance chemical reaction

CO(g)+2H2(g)⇌CH3OH(g)

To find out the equilibrium constant first need to find the concentration of each entities at equilibrium.

Rest all thing in the image

Homogenized whole milk contains 4% butterfat by volume. how many milliliters of fat are there in a glass (250 ml) of milk?

Answers

Volume of one glass of milk = 250 mL

Percent by volume of butterfat in homogenized milk = 4%

This means 4mL butterfat is present per 100mL milk

Volume of fat present in 250 mL of homogenized milk:

$250mL milk*(4mL butterfat)/(100mL milk)= 10mL butterfat$

Therefore, 250mL homogenized milk which is 4 % butterfat contains 10mL butterfat.

If the density of butterfat is 0.8g/mL, the mass of butterfat present in 250mL milk will be:

$10mL butterfat*(0.8g butterfat)/(1mL butterfat) =8g butterfat$

Which diagram below shows the pathway of energy through an ecosystem? A.producer → carnivore → herbivore

B.producer → herbivore → carnivore

C.herbivore → producer → carnivore

D.carnivore → herbivore → producer

Answers

the answer is B. producer,herbivore, carnivore

Which chemical formula shows a covalent compound?NaCl

HBr

MgO

CO2

Answers

Covalent compound CO2

Answer:

CO2

Explanation:

A covalent compound is a compound between 2 nonmetals. For this reason, NaCl and MgO can be eliminated since both contain metals. While neither H nor Br are metals, in HBr H is acting as a metal. CO2 is the only choice containing both nonmetals, with both elements acting like nonmetals as well.

Why might calcium be important in the diet of many living
things?

Answers

Answer:

Calcium is a nutrient that all living organisms need, including humans. It is the most abundant mineral in the body, and it is vital for bone health. Humans need calcium to build and maintain strong bones, and 99% of the body’s calcium is in the bones and teeth.

Answer: Helps form bones and shells

Explanation:

The solid form of a substance is usually more dense than its liquid and gaseous forms. Similarly the liquid form is usually more dense than the gaseous form. Which of these breaks this general density rule?
A. ice floating in a glass of water
B. vapor rising from a hot cup of tea
C. cooled magma sinking in a lava flow
D. a hot air balloon falling as the gas inside cools

Answers

A is the answer.

Ice is solid, however, water is liquid. Yet ice still floats which is less dense than water.

Hope this helps!

Other Questions

Fe2O3+2Al=Al2O3+2Fe A welder has 1.873 × 10^2 g Fe2O3 and 94.51 g Al in his welding kit. Which reactant will he run out of first? (options: Fe2O3 or Al.......it's Fe2O3). How much of this reactant should he order to make sure he runs out of both reactants at the same time? He should order ___g of the limiting reactant.

A droplet of pure mercury has a density of 13.6 g/cm^3. What is the density of a sample of pure mercury that is 10 times as large as the droplet?

Pure,24k gold is very malleable.by mixing gold with other metals it becomes less malleable.in what situations would you want to use gold that is not as malleable?

A student analyzed an unknown sample that contained a single anion. The sample gave a white precipitate upon addition of a solution of AgNO3 which dissolved in ammonia. Which anion is present in the unknown solution? Write the corresponding net ionic equation.