Across
- 1. We experience night and day because the earth ___ on its axis.
- 2. Our solar system belong to the ___ Galaxy.
- 6. Large group of stars.
- 7. These allow astronauts to travel to close planets, our moon & into outer space to collect data and experience first hand the conditions in space.
- 8. When the northern hemisphere has ___ the southern hemisphere has winter because of the earth’s axis tilt.
- 10. With optical ___ astronomers see closer the objects in outer space such as moons, planets, galaxies.
- 14. These are sent by scientists to collect data on far away planets that humans can never get to.
- 15. This kind of eclipse occurs when the moon either partially or completely blocks the sun from the Earth’s view.
Down
- 1. We experience the seasons because the earth revolves around the sun and is tilted on its axis.
- 3. Gravitational pull between objects ___ as their masses increase.
- 4. One complete revolution of the Earth around the sun takes one ___.
- 5. This force is the reason the planets revolve around the sun.
- 9. Gravitational pull between objects ___ as the distance between them increases.
- 11. These are used to transmit signals from outer space such as pictures, topographic maps.
- 12. There are 3 different kinds of (shapes of) galaxies including ___, elliptical and irregular. The Milky Way Galaxy is a spiral galaxy.
- 13. This kind of eclipse occurs when the Earth blocks our view of the moon.