9a
Mars is not suitable for human life
A day on Mars lasts 24 hours
A day on Mars lasts 24 hours and 40 minutes
A day on Venus lasts 243 Earth days
Mars has seasons like on Earth
colonists would be able to make water on Mars
Why would colonists be able to make water on Mars?
It is very cold on Mars
there's stronger gravity than on Earth
there's weak gravity on Mars
There is lots of radiation from the Sun
There is much oxygen there
Robots would build underground homes before the colonists arrived
Colonists would live in underground homes
Colonists would grow food in the fields
Colonists would need big greenhouses
Mars might become more like Earth if people sent robots there on spacecraft
Mars might become more like Earth if we sent greenhouse gases there on spacecraft
It takes 8 months to travel to Mars from Earth
It takes 9 months to travel to Mars from Earth
500 people wrote to a magazine about going to a colony on Mars
Створюйте онлайн-тести
для контролю знань і залучення учнів
до активної роботи у класі та вдома
