Grade 5 Science — Energy — how things work
Say what energy does, name the sources a home and a vehicle run on, tell clean energy from fuels that pollute, and handle electricity safely.
Name: ________________________
1.How does the chapter describe what energy is?
- a) The electricity that comes through a wire into a house
- b) A fuel that has to be burned before it can be used
- c) What makes things move, light up, produce sound, do work and change temperature
- d) Something found in food and nowhere else
2.Sort each of these into what is safe to do around electricity and what is not.
Groups: Safe · Not safe
- Touch the wires of a device while it is plugged in
- Poke a pencil into a socket
- Stay away from a fallen electric pole
- Play near an electric box or a transformer
- Tell an adult that a switch looks strange
3.Two cups of water are filled at the same time, one left in the sunlight and one in the shade. Twenty minutes later the sunlit one is warmer. What does that show?
- a) Water is cooler when it is kept still
- b) A cup in the sun holds less water than one in the shade
- c) Water in the shade loses its heat to the ground
- d) Sunlight gives us heat energy
4.This house draws on three natural sources of energy. Tap the one that works because the wind is blowing.
Write the number of the part.
5.A dog runs, a bird flies, and you walk to school. Where does the energy for each of the three come from?
- a) The air they breathe
- b) The warmth of the ground
- c) Sunlight falling on them
- d) Food
6.Rubber bands are stretched round a cardboard box and plucked. What kind of energy does the chapter say this shows?
- a) Sound energy
- b) Heat energy
- c) Stored energy
- d) Light energy
7.In parts of Himachal Pradesh, Uttarakhand and Ladakh, families keep their cattle on the ground floor and live on the floor above. Why?
- a) The animals are safer from the wind at ground level
- b) The heat from the animals keeps the rooms above warm in winter
- c) It leaves the upper floor free for storing firewood
- d) It is easier to carry water to the animals that way
8.Electricity made from the wind, from water or from the Sun leaves behind no smoke and no waste. What two-word name does the chapter give it?
Answer key — Grade 5 Science — Energy — how things work
- 1. c) What makes things move, light up, produce sound, do work and change temperature
- 2. Stay away from a fallen electric pole → Safe; Tell an adult that a switch looks strange → Safe; Touch the wires of a device while it is plugged in → Not safe; Poke a pencil into a socket → Not safe; Play near an electric box or a transformer → Not safe
- 3. d) Sunlight gives us heat energy
- 4. 2 — The windmill
- 5. d) Food
- 6. a) Sound energy
- 7. b) The heat from the animals keeps the rooms above warm in winter
- 8. clean energy