Chemistry Middle School

What are the main causes of convection currents in the asthenosphere?

pls answer to be marked brainliest pls! I have only 31 minutes left not on a test though but pls answer

science class grade 6

Answers

Answer 1
when warm air rises and cool air sinks
Answer 2
The heating of the Earth’s surface and atmosphere by the sun drives convection within the atmosphere and ocean. This convection produces winds and ocean currents. The greater the pressure differences between a low-pressure area and a high-pressure area, the stronger the winds.

Related Questions

Which form of energy is used as a roller coaster moves down the track?

a roller coaster moving down a track


Chemical energy
Light energy
Mechanical energy
Solar energy

Answers

Answer:

Mechanical energy

Explanation:

the answer is mechanical hope this helps

What do cuticles do for land plants that were not necessary for ancestors that lived in the water?

Cuticles allow them to grow bigger and taller.
Cuticles help them transport water.
Cuticles help prevent water loss.
Cuticles allow the performance of photosynthesis.
HELP PLS AND THX

Answers

Answer:prevention of water loss would be unnecessary

Explanation:

edge 2021

Cuticles are protective lining in the epidermal layer of plants. Cuticles helps to reduce water loss and protect the plants from environmental stresses.

What is cuticles?

Cuticle is an organism's external layer or area that makes touch with the environment. The epidermis secretes the dead, noncellular cuticle in many invertebrate species. In humans, the cuticle is the epidermis, and this layer may include colours and chitin, similar to arthropods.

The cuticle is a protective coating that protects the epidermal cells of leaves and other organs while preventing water loss in some higher plants.

It is made up of cutin, a waxy, water-repellent compound related to suberin that is present in the corky tissue's cell walls. Hence, option c is correct.

Find more on cuticles:

https://brainly.com/question/28578072

#SPJ2

Please help I need an answer like RIGHT NOW!

Answers

Answer:

for what nothing is heree??????????? <3

Explanation:

There isn’t anything here luv!?

Pls help meh......Due at 3:00
What type of elements bond covalently?
What are two covalently bonded atoms called?
When drawing an electron dot structure, should you pair up as many electrons as you can around their original atom or should you leave them single?
How does this help you discover how many bonds they will form?
If a molecule has a triple bond, how many pairs of electrons does it share? How many total electrons is that?
What is a molecular compound?
What are properties of molecular compounds?
Why are molecular compounds poor electrical conductors?
How do bonded atoms become partially charged?
What is a nonpolar bond?
What is a polar bond?
Do you think water in the Dead Sea would conduct electricity? Why?

Answers

Answer: most molecular compounds poor conductors because they do not have charged particles to carry current.

Explanation:

A compound is the chemical bonding of what

Answers

A chemical bond is the physical phenomenon of chemical substances being held together by attraction of atoms to each other through sharing, as well as exchanging, of electrons -or electrostatic forces.

Answer:

A compound is a molecule made of atoms from different elements

Explanation:

All compounds are molecules, but not all molecules are compounds. Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. Water (H2O) can be called a molecule or a compound because it is made of hydrogen (H) and oxygen (O) atoms.

⚠️An irregular piece of iron has a mass of 78.7 grams. When placed in a graduated cylinder with 30 mL of water, the water rises to the 35 mL ​⚠️

Answers

Answer:

The density of the iron is: 15.74g/cm3

Explanation:

-To determine the density of something, you have to divide the mass and the vol.

-mass/volume = density or, m/v = d

-The mass of the iron is: 78.7 grams

-The volume of the iron is 5mL

In order to find the density, you have to divide:

m/v = d

78.7g ÷ 5mL = 15.74

Hope This Helps (:

The density of the iron is 15.74 g/cm3

9. Mixing baking soda and vinegar leaves behind water and salt. This is an example of mixing ________ and __________. Is it a chemical or physical reaction?

Answers

Answer:

Mixing baking soda and vinegar is a chemical reaction. I’m not so sure about the fill in the blanks.

Explanation:

It is a chemical change due to the formation of gas and the change in temp.

It is a chemical reaction

Choose the abiotic factors that characterize the tundra biome.

Warm, wet forests
Very little rainfall, extreme temperatures
Arctic foxes, snowy owls, wolves
Very low temperatures, very little precipitation

Answers

Tundra biomes have very low temperatures and little precipitation. :)

In your own words (Please don't search it up, and don't answer if you don't know.)
Please tell me the meaning of Outcome Variable and Test Variable
Thank you!

Answers

Answer: An outcome variable is a variable that is the final or missing variable in an experiment and a test variable is a variable that is being tested to find the final variable or missing variable (The outcome)

Explanation:

Two processes are described below: Process A: rapid moving water strikes a rock on the bottom of a stream and breaks it into pieces Process B: glaciers moving along a rocky surface form cracks in the rocks
which statement is true about the processes?

both represent physical weathering

both represent chemical weathering

Process a is physical weathering in process B is chemical weathering

process a is chemical weathering and process B is physical weathering

Answers

Answer:

both represent physical  weathering

Explanation:

Answer:

B. both represent physical weathering

Explanation:

I did the test

Describe the composition of each layer: Crust, mantle, outer core, and inner core all separate please it is worth 5pts x (this means 10 pts)

Subject: Earth Science

Answers

Answer:

crust-Silicate rocks

mantle- Silicate rocks rich in iron and magnesium

Ultramafic rocks

outer core- A layer of molten iron and nickel

inner core- solid iron and nickel

Explanation:

The answer: Crust silicate rocks
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