Quiz about Heat Summary

Question 1

The surrounding temperature is always the same.

Accepted Answer

no

Answer

yes

Question 2

Which substance expands the most when heated?

Accepted Answer

gas

Answer

liquid

Answer

solid

Answer

They all expand by the same amount.

Question 3

Which substance will contract the least when cooled down?

Accepted Answer

iron

Answer

They all contract by the same amount.

Answer

water

Answer

oxygen

Question 4

An iron block at $$40\degree C$$ is placed in contact with an iron block at $$80\degree C$$ . What is the final temperature of both blocks?

Accepted Answer

$$60\degree C$$

Answer

$$40\degree C$$

Answer

$$80\degree C$$

Answer

$$120\degree C$$

Question 5

Two liquids, one at $$40\degree C$$ and the other at $$90\degree C$$ are mixed. What is likely to be the temperature of the mixture?

Accepted Answer

$$65\degree C$$

Answer

$$40\degree C$$

Answer

$$50\degree C$$

Answer

$$130\degree C$$

Question 6

How can you open the tight metal cap of a ketchup bottle?

Accepted Answer

Heat the cap only

Answer

Cool the cap only

Answer

Heat the bottle only

Answer

Heat the bottle and cap

Question 7

A thermostat is used to control temperature. It is used in _______.

Accepted Answer

electric iron

Answer

printer

Answer

thermometer

Answer

radio

Question 8

When water absorbs heat and is changing into gas, the temperature of the water _________.

Accepted Answer

remains the same

Answer

decreases

Answer

increases

Answer

keeps changing

Question 9

Is heat lost or gained by you when you enter an air-con room?

Accepted Answer

heat is lost

Answer

heat is gained

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