Engineering Worksheet: Sustainability
Engineer's tip (Reduce, reuse, recycle): Reduce = use less · reuse = use again · recycle = break down and remake. Renewable: sun, wind, water, biogas, waves. Non-renewable: coal, petrol, diesel, natural gas. Count savings with × and ÷: bags per week × weeks, bottles ÷ bottles per bench.
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- 1.♻️ A school bench is made from 350 recycled plastic bottles. How many benches can be made from 1400 bottles?
- 2.Which of these is recycle (make new things)? (a) pulp old paper (b) switch off unused lights (c) buy less packaging (d) plant in old tyres
- 3.Which of these is reuse (use again)? (a) switch off unused lights (b) fix a dripping tap (c) melt cans into new cans (d) give old books away
- 4.True or false: natural gas is a non-renewable energy source. (a) False (b) True
- 5.♻️ A family used to throw away 4 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 5 weeks?
- 6.♻️ Reduce, reuse or recycle: give old books away? (a) reduce (b) reuse (c) recycle
- 7.♻️ Reduce, reuse or recycle: switch off unused lights? (a) reuse (b) reduce (c) recycle
- 8.♻️ Is flowing river water a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
- 9.♻️ Is natural gas a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
- 10.True or false: sunlight is a non-renewable energy source. (a) True (b) False
- 11.♻️ A project report has 74 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
- 12.♻️ Reduce, reuse or recycle: reuse gift paper? (a) reduce (b) recycle (c) reuse
- 13.Which of these is reduce (use less)? (a) carry a cloth bag (b) give old books away (c) refill a water bottle (d) melt glass into new jars
- 14.♻️ Reduce, reuse or recycle: melt cans into new cans? (a) recycle (b) reduce (c) reuse
- 15.♻️ Which energy source will never run out? (a) diesel (b) petrol (c) coal (d) sunlight
- 16.♻️ Reduce, reuse or recycle: plant in old tyres? (a) reuse (b) reduce (c) recycle
- 17.Which of these is reduce (use less)? (a) plant in old tyres (b) give old books away (c) melt cans into new cans (d) print on both sides
- 18.True or false: petrol is a non-renewable energy source. (a) True (b) False
- 19.Which of these is reuse (use again)? (a) carry a cloth bag (b) reuse gift paper (c) print on both sides (d) turn plastic into tiles
- 20.♻️ Reduce, reuse or recycle: use a jar as a pen stand? (a) recycle (b) reduce (c) reuse
- 21.♻️ A school bench is made from 500 recycled plastic bottles. How many benches can be made from 4500 bottles?
- 22.♻️ Reduce, reuse or recycle: print on both sides? (a) reduce (b) recycle (c) reuse
- 23.♻️ Reduce, reuse or recycle: buy less packaging? (a) reduce (b) reuse (c) recycle
- 24.Which of these is reuse (use again)? (a) use a jar as a pen stand (b) pulp old paper (c) buy less packaging (d) melt cans into new cans
- 25.Which of these is reuse (use again)? (a) buy less packaging (b) fix a dripping tap (c) plant in old tyres (d) print on both sides
- 26.♻️ A project report has 14 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
- 27.True or false: wind is a non-renewable energy source. (a) True (b) False
- 28.♻️ A family used to throw away 10 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 10 weeks?
- 29.♻️ Which is the BEST order to think about waste? (a) reuse, recycle, reduce (b) recycle, reuse, reduce (c) burn, bury, forget (d) reduce, reuse, recycle
- 30.♻️ A school bench is made from 400 recycled plastic bottles. How many benches can be made from 2800 bottles?
- 31.♻️ Is coal a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
- 32.True or false: wind is a renewable energy source. (a) False (b) True
- 33.Which of these is reduce (use less)? (a) melt glass into new jars (b) refill a water bottle (c) buy less packaging (d) use a jar as a pen stand
- 34.Which of these is recycle (make new things)? (a) fix a dripping tap (b) plant in old tyres (c) turn plastic into tiles (d) give old books away
- 35.♻️ Reduce, reuse or recycle: melt glass into new jars? (a) recycle (b) reuse (c) reduce
- 36.♻️ Reduce, reuse or recycle: carry a cloth bag? (a) reuse (b) reduce (c) recycle
- 37.♻️ A project report has 72 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
- 38.♻️ A family used to throw away 6 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 5 weeks?
- 39.♻️ A project report has 20 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
- 40.♻️ Is wind a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
Answer key
- 4
- pulp old paper
- give old books away
- True
- 20
- reuse
- reduce
- renewable
- non-renewable
- False
- 37
- reuse
- carry a cloth bag
- recycle
- sunlight
- reuse
- print on both sides
- True
- reuse gift paper
- reuse
- 9
- reduce
- reduce
- use a jar as a pen stand
- plant in old tyres
- 7
- False
- 100
- reduce, reuse, recycle
- 7
- non-renewable
- True
- buy less packaging
- turn plastic into tiles
- recycle
- reduce
- 36
- 30
- 10
- renewable
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