Download Chapter 18: Inner and Outer Planets Name: 1. What is the study of

Chapter 18: Inner and Outer Planets
1. What is the study of objects in
Name:______________________
1. Astronomy
space?
2. How does gravity affect the
2. It keeps planets moving in circular
movement of planets?
paths instead of straight lines.
3. The planet Mercury is very hot
3. Mercury has no atmosphere to
during the day and very cold at night.
hold in heat.
Why is this?
4. What do you know about Mars?
4. Mars is an inner planet with two
moons. The planet sometimes has
huge dust storms that cover the
planet. The rocks and solid found on
the planet are rich in iron.
5. What is the cause of the Great Red
5. The Red Spot on Jupiter is a storm
Spot on Jupiter?
that has been raging for hundreds
of years.
6. What are the rings of Saturn made
6. The rings of Saturn are made of
of?
water, ice, dust, and chunks of rocks.
7. Jupiter has the greatest number
7. moons
of what?
8. Pluto has a moon named what?
8. Charon
9. What is different about the
9. Uranus rotates on its side.
planet Uranus?
10. What about Earth makes life
10. the atmosphere and liquid water
possible?
11. What is the universe?
11. The universe is all of space and
everything in it.
12. What is a galaxy?
12. A galaxy is a system of dust, gas
and millions of stars held together by
gravity.
13. What is a solar system?
13. The solar system includes the Sun,
the planets, their moons, dwarf
planets, asteroids, and other objects.
14. What are craters?
14. Craters are dents shaped like
bowls.
15. What is a space probe?
15. A space probe is a vehicle that
carries cameras and other tools for
different objects in space.
16. What is a satellite?
16. A satellite is an object that orbits
another object in space.
17. Why can life not exist on Venus?
17. Venus is surrounded by a thick
atmosphere of hot, poisonous clouds
that would poison any living thing on
the planet. Venus is also too hot for
life to exist because it is so close to
the Sun.
18. Name the four gas giants that are
18. Jupiter, Saturn, Uranus, Neptune
outer planets. Tell me something
Jupiter: largest planet in the solar
about each planet.
system
Saturn: has a ring system that orbits
the planet
Neptune: smallest of the gas giants
Uranus: the only planet that rotates
on its side