Combustion is the burning of a fuel to release energy, such as the petrol burned by a car’s motor. What chemical is released is this process?

• Carbon dioxide
• Oxygen
• Nothing is released
• Glucose

Photosynthesis by plants and trees is a process…

• that captures carbon from CO2 and converts it into organic matter such as wood and leaves. 
• by which plants absorb O2 during light reactions
• that captures carbon from the atmosphere and converts it into oxygen
• by which plants capture photos from their snapchat feed and convert them to their lock screen.

CO2 is released into the atmosphere by

• Deforestation
• Coal-fired power plants
• Aeroplanes
• All of these

CO2 is removed from the atmosphere

• By plants
• By wind turbines
• By solar panels
• By teachers, and kept until Friday

Complete the missing lyrics from the song SOS by rapper Will.i.am:  
Messing up our air for us, they don't really care for us
But we can't complain, because the only one to blame is us
The gas is rising up but we keep on filling up
______  got the whole planet heated up
It's blazing in the winter, even hotter in the summer

• CO2 levels
• Donald Trump
• Climate change
• Fossil fuels

There are yearly highs and lows in this carbon dioxide graph. Which of the following could be the cause for this?

• Humans burn more fossil fuels in late summer to cool their homes creating a spike in CO2

• Decaying leaves release CO2 from respiration and increase levels over winter

• Plants only photosynthesize in the winter therefore CO2 spikes in the fall.

• atmospheric carbon dioxide levels have increased steadily since 1960

____________________ is a part of oceans, air, rocks, soil, and all living things.

• Nitrogen

• Water

• Carbon

• Silver

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

How do animals get carbon?

• By eating plants and or other animals.

• They absorb it from the atmosphere.

• From the ground

• They do not get carbon from anywhere.

Tags

NGSS.MS-LS1-7

NGSS.MS-LS2-3

Respiration is a process where living things (animals) inhale ______________ and exhale _____________________.

• Oxygen, Nitrogen

• Carbon Dioxide, Oxygen

• CO₂, O

• Oxygen, Carbon Dioxide

Tags

NGSS.MS-LS2-3

What is a carbon sink?

• Something that adds to the atmosphere.

• Something that removes carbon from the atmosphere.

• Something that adds carbon to the earth's crust.

• Something that removes carbon from the earth's crust.