Carbon footprints and ways to cut emissions

Question 1

A car emits 100 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

What does carbon capture and storage (CCS) do?

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

Question 3

A household emits 3000 kg of CO₂ a year from energy use. Insulating the loft and walls cuts this by 25 %. How many kg of CO₂ are saved each year?

Answer kg

Question 4

A car emits 150 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 5

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. stores electricity in batteries
• D. turns CO₂ into oxygen in the air

Question 6

A household emits 3000 kg of CO₂ a year from energy use. Switching from a gas boiler to a heat pump cuts this by 25 %. How many kg of CO₂ are saved each year?

Answer kg

Question 7

A car emits 100 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 8

Why is it hard to reduce carbon footprints to zero?

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

Question 9

A household emits 3000 kg of CO₂ a year from energy use. Fitting solar panels cuts this by 30 %. How many kg of CO₂ are saved each year?

Answer kg

Question 10

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 11

Why is it hard to reduce carbon footprints to zero?

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

Question 12

A household emits 3000 kg of CO₂ a year from energy use. Insulating the loft and walls cuts this by 25 %. How many kg of CO₂ are saved each year?

Answer kg

Question 13

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 14

What does carbon capture and storage (CCS) do?

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

Question 15

A household emits 4000 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 16

A car emits 100 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