10th grade weather and climate

Question 1

A car emits 120 g of CO₂ per km and is driven 8000 km in a year. How much CO₂ does it emit in the year, in kg?

Answer kg

Question 2

A household emits 3600 kg of CO₂ a year from energy use. Insulating the loft and walls cuts this by 50 %. How many kg of CO₂ are saved each year?

Answer kg

Question 3

What is a carbon footprint?

• A. the soot left on shoes
• B. the total greenhouse gases released by a product, service or person over its life
• C. the amount of coal in the ground
• D. the mass of carbon in your body

Question 4

A car emits 100 g of CO₂ per km and is driven 12000 km in a year. How much CO₂ does it emit in the year, in kg?

Answer kg

Question 5

A household emits 2400 kg of CO₂ a year from energy use. Switching from a gas boiler to a heat pump cuts this by 30 %. How many kg of CO₂ are saved each year?

Answer kg

Question 6

What is a carbon footprint?

• A. the amount of coal in the ground
• B. the mass of carbon in your body
• C. the soot left on shoes
• D. the total greenhouse gases released by a product, service or person over its life

Question 7

A car emits 100 g of CO₂ per km and is driven 10000 km in a year. How much CO₂ does it emit in the year, in kg?

Answer kg

Question 8

A household emits 3600 kg of CO₂ a year from energy use. Fitting solar panels cuts this by 50 %. How many kg of CO₂ are saved each year?

Answer kg

Question 9

Why is it hard to reduce carbon footprints to zero?

• A. Renewable energy produces more CO₂ than coal
• B. Planting trees increases CO₂
• C. Footprints cannot be measured at all
• D. Many activities, such as making cement, steel and food, still release greenhouse gases

Question 10

A car emits 150 g of CO₂ per km and is driven 5000 km in a year. How much CO₂ does it emit in the year, in kg?

Answer kg

Question 11

A household emits 2400 kg of CO₂ a year from energy use. Insulating the loft and walls cuts this by 40 %. How many kg of CO₂ are saved each year?

Answer kg

Question 12

What does carbon capture and storage (CCS) do?

• A. captures CO₂ from power stations or factories and stores it underground
• B. burns more fuel
• C. turns CO₂ into oxygen in the air
• D. stores electricity in batteries

Question 13

A car emits 120 g of CO₂ per km and is driven 12000 km in a year. How much CO₂ does it emit in the year, in kg?

Answer kg

Question 14

A household emits 4000 kg of CO₂ a year from energy use. Fitting solar panels cuts this by 25 %. How many kg of CO₂ are saved each year?

Answer kg

Question 15

Why is reducing methane emissions an important climate action?

• A. Methane traps much more heat per molecule than CO₂, so cuts have a fast effect
• B. Methane stays in the air forever
• C. Methane is not a greenhouse gas
• D. Methane cools the planet

Question 16

A car emits 180 g of CO₂ per km and is driven 5000 km in a year. How much CO₂ does it emit in the year, in kg?

Answer kg