y9 Heat and Temperature

Describe the temperature of the water if 50ml of hot water is mixed with 50ml of cold water.

Predict the temperature of the water after mixing 100 mL of 90°C with 100 mL of 40°C water.

• 60°C

• 50°C

• 55°C

• 65°C

What are the units of temperature?

• N

• °C

• J

• m

What are the units of heat?

• N

• °C

• J

• m

Match the following

• force applied per unit area

• Heat

• average energy of the particles

• Temperature

• total energy of the particles

• Pressure

The equipment used to measure the temperature is called the

Which of these needs more thermal energy to increase its temperature?

• a glass containing 250 mL of water

• a swimming pool containing 300 000 L of water

Absolute zero is the absolute cold. What is the value of the absolute zero in °C ?

Write a whole number, please.

If the temperature increases, the particles move

• faster

• with the same speed

• more slowly

If the temperature decreases, the particles move

• faster

• with the same speed

• more slowly