1. The Solar System
Unit D Chapter 1

2. Name the outer planets

3. Describe the 4 inner planets
Small and rocky

4. Name 4 things orbiting the sun.
Planets, comets, moons, asteroids

5. Space rocks are also called __________.
asteroids

6. Mercury Venus Earth Mars
Name the 4 inner planets.
Mercury
Venus
Earth
Mars

7. Path a planet takes around the Sun
What is an orbit?
Path a planet takes around the Sun

8. How many planets are in our solar system?
Eight

9. What is a space probe?
A robotic vehicle used in space

10. What are comets made of?
Ice and dust

11. What was the program called that landed astronauts on the moon?
Apollo

12. What does solstice mean?
Shortest and longest hours of daylight.

13. What is a satellite?
An object that orbits another object.

14. The Earth spins or _____________ on its axis.
rotates

15. Planets and their moons orbit the ______.
sun

16. What was the Mercury program?
1st program where the United States sent humans into space

17. When would an eclipse occur?
When one object passes in front of another.

18. Who was the first person to use a telescope?
Galileo

19. What was the 1st artificial satellite?
Sputnik

20. Equal hours of daylight and darkness are called an ______________
equinox

21. How has technology evolved in the study of space
How has technology evolved in the study of space? Name the 4 items used to study space.
Telescope, satellite, space probe, space shuttle

22. The Earth rotates on its ________
axis

23. What is a telescope used for?
To magnify distant objects