6th grade quiz

In the picture below, a slow-moving mass of ice has gradually weathered and

eroded rock away in a mountain valley. The landscape of rock has greatly changed.

Which statement below best explains the sphere that was affected in the

transformation?

• A. geosphere: because the cryosphere scraped rock away as it slowly moved

• B. geosphere: because the hydrosphere scraped rock away as it slowly moved

• C. biosphere: because the cryosphere flooded the valley eliminating trees and plants

• D. biosphere: because the hydrosphere flooded the valley eliminating trees

  and plants

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When dead plants decompose, nitrogen is returned to the soil. Which two

spheres are involved in this process?

• A. biosphere and hydrosphere

• B. atmosphere and geosphere

• C. geosphere and hydrosphere

• D. biosphere and geosphere

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3. Water evaporates from the surface of a lake. What two spheres are involved in

this process?

• A. atmosphere and geosphere

• B. geosphere and hydrosphere

• C. hydrosphere and atmosphere

• D. cryosphere and hydrosphere

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4. Plants absorb sunlight and a gas called carbon dioxide from the air to make

sugars. These sugars are stored and used as an energy source for the plants.

When animals eat the plants, they acquire the energy stored in the plants.

Which two spheres are described within these interactions?

• A. atmosphere and biosphere

• B. cryosphere and biosphere

• C. hydrosphere and biosphere

• D. geosphere and biosphere

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In 1815 a volcano erupted, spewing billions of tons of ash into the sky. This ash

“cloud” caused global annual temperatures to drop below normal, causing “a

year without a summer” in 1816. Which spheres are included in this

description?

• A. biosphere and geosphere

• B. geosphere and atmosphere

• C. atmosphere and hydrosphere

• D. hydrosphere and cryosphere

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The stratosphere contains the Earth’s ozone layer. The ozone blocks some solar

radiation. Which of the following would most likely happen if the ozone layer

was removed from the atmosphere?

• A. The removal of the ozone layer would cause higher temperatures.

• B. The removal of the ozone layer would cause an extinction of all life.

• C. The removal of the ozone layer would cause a higher rate of skin cancer.

• D. The removal of the ozone layer would cause the depletion of natural

  resources.

  
  

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The diagram to right shows how

temperature changes with altitude in

the atmosphere. How does layer C of

the atmosphere protect Earth’s

surface?

• A. The mesosphere’s thickness helps

  break down meteors.

  
  

• B. The stratosphere’s thickness helps

  break down meteors.

  
  

• C. The mesosphere contains the ozone

  layer which helps absorb the Sun’s

  radiation.

  
  

• D. The stratosphere contains the

  ozone layer which helps absorb the

  Sun’s radiation.

  
  

9. In the diagram to the above, how does layer A support life on Earth?

• A. The mesosphere’s thickness helps break down meteors.

• B. The thermosphere shields us from dangerous radiation from the sun.

• C. The troposphere contains the gases we breathe and the water cycle we

  depend on.

  
  

• D. The stratosphere contains the ozone layer which helps absorb the suns

  radiation.

  
  

10. Earth’s atmosphere helps to maintain the various climates found around the

world and keeps Earth from becoming extremely cold all over. How does the

atmosphere help to keep Earth insulated and warm?

• A. The atmosphere creates heat as Earth moves through space, helping to

  insulate Earth.

  
  

• B. The atmosphere traps the heat generated by Earth’s core and helps maintain

  Earth’s climate.

  
  

• C. The atmosphere helps spread the warmth from the water near the equator to

  other parts of Earth.

  
  

• D. The atmosphere helps trap heat energy from the Sun and energy radiated

  from Earth to maintain the climate.

  
  

13. Water cycles through Earth’s spheres. When water evaporates from the ocean, which

two spheres are involved?

• A. Atmosphere and biosphere

• B. Biosphere and cryosphere

• C. Geosphere and hydrosphere

• D. Hydrosphere and atmosphere

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