# Heat and temperature

> Grade 4: temperature in degrees Celsius, thermometers, thermal insulators and conductors, melting and boiling points of water, keeping things warm or cold.

Source: https://olyclass.com/library/science-g4-heat-temperature-en/

- Subject: Science
- Level: Grade 4
- Quiz: 16
- Play it free on one screen (projector, TV or whiteboard): https://olyclass.com/library?play=science-g4-heat-temperature-en
- Copy and edit it: https://olyclass.com/library?copy=science-g4-heat-temperature-en
- Games it plays well in: [Paper Race](https://olyclass.com/classroom-games/paper-race/), [Three in a Row](https://olyclass.com/classroom-games/three-in-a-row/), [Line of Four](https://olyclass.com/classroom-games/line-of-four/), [Team Bingo](https://olyclass.com/classroom-games/team-bingo/)

## Questions

1. Which unit do we use to measure temperature in science class? (Degrees Celsius / Kilograms / Litres / Metres)
   Answer: Degrees Celsius
2. Which temperature is the warmest? (0 °C / 12 °C / 30 °C / 5 °C)
   Answer: 30 °C
3. A temperature of 35 °C is hotter than a temperature of 20 °C.
   Answer: True
4. Which tool do we use to measure temperature? (A balance / A ruler / A stopwatch / A thermometer)
   Answer: A thermometer
5. In a liquid thermometer, what happens to the liquid when it gets warmer? (It drops down the tube / It rises up the tube / It stays at the bottom / It turns to ice)
   Answer: It rises up the tube
6. What do we call a material that lets heat travel through it easily?
   Answer: A thermal conductor
7. Which material is the best thermal insulator? (Aluminium / Copper / Iron / Wool)
   Answer: Wool
8. A metal spoon left in hot soup gets hot faster than a wooden spoon.
   Answer: True
9. At what temperature does pure water freeze or ice melt? (0 °C / 10 °C / 100 °C / 50 °C)
   Answer: 0 °C
10. At what temperature does pure water boil, in degrees Celsius?
   Answer: 100 °C
11. What happens to ice cubes left in a warm room? (They boil / They get colder and bigger / They melt into water / They turn to metal)
   Answer: They melt into water
12. Water boils at 50 °C.
   Answer: False
13. Why does a woolly hat keep your head warm? (It lets heat escape fast / It makes heat for you / It pulls cold in / It slows heat leaving your body)
   Answer: It slows heat leaving your body
14. Which is best for keeping a hot drink hot for longer? (A lidded insulated flask / A thin glass cup / An open metal cup / An open plastic dish)
   Answer: A lidded insulated flask
15. Name one way to keep a cold drink cold on a hot day.
   Answer: Put it in an insulated cooler bag or flask (with ice)
16. How does a cool bag help keep food cold? (It lets heat in quickly / It makes cold from the air / It pushes the food's cold out / It slows heat getting in from outside)
   Answer: It slows heat getting in from outside