Carbon footprints and ways to cut emissions

Question 1

A household emits 4000 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 2

What does carbon capture and storage (CCS) do?

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

Question 3

A car emits 150 g of CO₂ per km and is driven 15000 km in a year. How much CO₂ does it emit in the year, in kg?

Answer kg

Question 4

A household emits 3000 kg of CO₂ a year from energy use. Fitting solar panels cuts this by 40 %. How many kg of CO₂ are saved each year?

Answer kg

Question 5

What is a carbon footprint?

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

Question 6

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 7

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 8

Why is it hard to reduce carbon footprints to zero?

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

Question 9

A car emits 180 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 10

A household emits 4000 kg of CO₂ a year from energy use. Insulating the loft and walls cuts this by 20 %. How many kg of CO₂ are saved each year?

Answer kg

Question 11

What does carbon capture and storage (CCS) do?

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

Question 12

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 13

A household emits 2400 kg of CO₂ a year from energy use. Insulating the loft and walls cuts this by 30 %. How many kg of CO₂ are saved each year?

Answer kg

Question 14

What does carbon capture and storage (CCS) do?

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

Question 15

A car emits 150 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 16

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