Heat and Cold

1

100

Diesel, petrol and LPG are extracted from crude oil. True or False?

True

200

Which of the following warning signals may lead to class suspension of primary school?

A. Yellow rainstorm warning signal

B. Red rainstorm warning signal

C. Black rainstorm warning signal

 B & C

300

The liquid in the thermometer _________ and ________ to show the temperature.

expands ; contracts

400

To keep the environment clean, we should handle ___________ properly and remove ___________ water.

waste;  stagnant

500

Give one example of applying "reduce" in daily life.

reduce using tissues / reduce using single-use utensils /  reduce using plastic bags

2

100

Different materials transfer heat at different rates. True or False.

True

200

Power plants produce electricity by burning _______ and ___________.

coal ;  natural gas

300

Dead plants and animals are buried underground for a long time. Dead plants turn into _________.

coal

400

What are the three ways to produce heat? 

Rubbing, from electricity, burning

500

Name two electrical appliances which produce heat from electricity.

iron, cooker, oven, etc.

3

100

List two ways of getting weather information.

TV / mobile phones / APPs / radio / newspaper / websites

200

Non-renewable energy will /will not be used up one day. Using them without control may cause __________.

will ;  pollution

300

Liquid, air and metals can all expand. True or False

True

400

What tools do Macao Observatory use to collect  weather data? Give two examples.

rain gauge / wind gauge/ wind vane / thermometers in a screen box

500

Dead plants and animals are buried underground for a long time. Dead animals turn into ________ and _________.

crude oil ;  natural gas

4

100

Give two examples of renewable energy.

Wind power / solar energy / tidal power / hydropower

200

Candles produce heat by ___________

burning

300

Plants make the environment beautiful and the air ________. It also provide shade and and help prevent _________.

fresh ; landslides

400

What wastes takes a long time to break down? List one.

plastic bottle / aluminium can  / foam box

500

What kinds of waste do we produce in daily life? Give two examples.

food waste / packaging / furniture / paper

5

100

Heat is transferred from the ___________ to _________.

hotter part ; colder part

200

What can be a good material for making the handle of a kettle?

plastic

300

As a citizen, what can you do to reduce noise at home? Give one example.

Turn down/lower the volume of TV  /   Close the door quietly/  Avoid talking loudly

400

Metals _________ when heated and __________ when cooled.

expands; contracts

500

As a student, what can you do to save energy at your home?

Turn off the lights when not in use;  take shorter showers ;  make use of natural light or wind