Astronomy and space science - Test Bite

1. Which is the correct order, starting with the smallest and ending with the largest?

planet - star - galaxy
planet - galaxy - star
star - planet - galaxy

2. What do we call an object that is in orbit around a planet?

a star
a satellite
a comet

3. Which is the third planet from the Sun?

Mars
Venus
Earth

4. Which force keeps the planets in orbit?

friction
gravity
tension

5. The orbits of the planets are:

perfect circles
slightly squashed circles
spheres

6. The further away from the Sun:

the faster the planet moves.
the hotter the planet is.
the longer the planet's orbit takes.

7. Why is a day on Mars about 37 minutes longer than a day on Earth?

Martian watches don't keep very good time.
Mars spins more slowly on its axis than Earth does.
Mars spins faster on its axis than Earth does.

8. In which direction does the Earth spin?

from west to east.
from east to west.
from north to south.

9. Why do we have seasons on Earth?

the Earth is closer to the Sun in summer than it is in winter.
the Sun is brighter in summer than it is in winter.
the Earth's axis is tilted.

10. At midday in summer in the Northen hemisphere, the Sun can be seen in the south. Where would you see the Sun at midday in the winter?

in the north.
in the south but higher in the sky.
in the south but lower in the sky.

11. Which phase of the Moon is this?

full Moon.
new Moon.
crescent Moon.

12. Which of the following is not a use of artificial satellites?

spying.
weather forecasting.
travelling to other planets.