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Level A1 – BeginnerCEFR A1
2 min
78 words
- Mars is very different today than before.
- Long ago Mars had more air.
- It had liquid water on the surface.
- Scientists ran small lab tests that copy Mars.
- They moved water and sand in a sealed chamber.
- Different air changed how water and mud moved.
- At higher air the flows looked much like Earth.
- Today low air can make water boil or freeze.
- This work helps scientists read ancient rocks.
- Different places on Mars could act very differently.
Difficult words
- surface — top layer of a planet or thing
- sealed — closed so no air or water enters
- chamber — a small closed space or room
- ancient — very old from a long time ago
- liquid — a substance that is not solid or gas
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Would you like to visit Mars?
- Have you seen water boil or freeze?
- Would you like to move water or sand in a test?
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