BGCS Final Exam, Rocks,Earth's Spheres and Global Warming

Which gas in our atmosphere is most abundant?

• Argon
• Oxygen
• Nitrogen
• Carbon Dioxide

What is the greenhouse effect?

• warming of the earth due to gases such as carbon dioxide and methane in our atmosphere

• cooling of the earth due to gases in our atmosphere

The following graph tells us what?

• Sea levels are decreasing

• Sea levels are rising

Which of the following sets of evidence supports global warming?

• CO₂ levels rising

• Sea levels rising

• Glacier mass decreasing

• All of the above

Global warming is created by natural factors

• True

• False

The main human activity that releases greenhouse gases is

• using bottled water
• burning fossil fuels
• texting on cellphones
• eating meat

Oceans are important to our environment and atmosphere because... (Choose all that apply)

• They absorb heat and carbon dioxide.

• They hold 97% of the world's water

• They generate 50% of the oxygen we breathe?

• They create opportunities for family outings and activities.

Carbon dioxide is taken in by plants during which process?

• Respiration

• Transpiration

• Photosynthesis

• Transportation

The atmosphere is divided into four layers, the mesosphere, troposphere, thermosphere, and stratosphere. Each layer has unique physical properties. Which of the following claims about the stratosphere is true?

• Weather happens in the stratosphere.

• There are no winds in the stratosphere.

• The stratosphere is below the troposphere.

• The stratosphere is warmer at the top than at the bottom.

Body of air surrounding our planet. 

• Hydrosphere 
• Biosphere 
• Atmosphere 
• Geosphere