Mixed
The heat of the ( ) keeps the Earth warm.
Sun
Metals are ( ) conductors that can transfer heat easily.
good
A rain gauge is used to measure the amount of ( ).
rainfall
Coal came from dead (animals / plants) in ancient times.
plants
(True/ False)
True
We should always pay attention to weather forecasts and prepare for different weather __________.
conditions
Heat is transferred from the ( ) part of an object to the ( )part of an object.
hotter; colder
The wind gauge and wind vane are used to measure the wind ( ) and the ( ) of wind.
speed , direction
List two renewable energy
wind power/ solar power/ tidal power/ hydro power
Newspaper transfer heat easily.
(True/ False)
False
When water is heated, its temperature ( ).
increases
The handle of the cooking pan is made of plastic which is a ( ) conductor.
poor
Which of the following will lead to the suspension of primary schools in Macau?
a. Typhoon Signal No. 1
b. Red Rainstorm Warning
c. Yellow Rainstorm Warning
d. It will be 30°c tomorrow.
b. Red Rainstorm Warning
Electricity comes from (crude oil / coal).
coal
Wood, plastic, rubber are ______________
poor conductors of heat
Heat can be produced in different ways, such as ( ), ( ) or from ( ).
burning , rubbing , electricity
Materials ( ) when heated and ( ) when cooled.
expands , contracts
Which of the following will lead to the suspension of primary schools in Macau?
a. Typhoon Signal No. 1
b. Thunderstorm Warning
c. Yellow Rainstorm Warning
d. It will be 38°c tomorrow.
d. It will be 38°c tomorrow.
Diesel, petrol and LPG come from ( coal / crude oil).
crude oil
Leaving gap between bridge joints to prevent the cracking in hot weather is because of (burning/ heat expansion and contraction).
heat expansion and contraction
How does the observatory make weather forecasts? Put them in correct orders.
a. Make weather forecast and release the data to public.
b. Collect the weather data with different tools.
c. Analyse the weather data.
d. People get the weather forecasts through media.
b -----> c-----> a -----> d
When the thermometer is heated, the liquid inside ( ), so its level rises.
expands
What safety measures should we take when Typhoon Signal No. 8 is going to be issued? (List 2)
Tape up windows.
Move plants indoors.
Stay safe at home.....
What should we do to save energy? List 2.
We should set the temperature of the air-conditioner higher.
We should turn off the electrical appliances when they are not in use.
We should walk more instead of driving cars.
List 2 good conductors of heat.
metal;copper;aluminium;silver