A Studen Discussion - Total Percentage 100%

1. Preparation (7/7 - 100%)

Words and phrases for talking about difference

but 

whereas

while

Words and phrases for talking about things that are the same

both

to share 

to have in common 

similar

2. Task 1: Write the characteristics in the correct group. (8/8 - 100%)

Earth

Has more air

Is closer to the Sun

Has stronger gravity 

Has more nitrogen and oxygen than carbon dioxide 

Has a longer day

Mars

Is 50 per cent smaller

Is colder

Used to have water

3. Task 2 Complete the sentences with words from the box. (6/6 - 100%)

1. Most people think Mars can support human life.

2. We measure distances in space using astronomical units.

3. The two planets aren’t the same colour.

4. Most of the water on Mars is probably frozen .

5. The air on Earth is mostly made up of nitrogen .

6. Gravity on Mars is just over one third as strong as on Earth.