1. Unit 5 Review

2. 1. All of the terms listed are related to force except-
Weight: mass with the force of gravity
Triple beam balance: measuring mass *
Spring scale: A spring balance measures the weight of an object
Newton: unit used when measuring force

3. 2. Gravity is-- Weight: the force on the object due to gravity
Inertia: the resistance of any physical object to any change in its state of motion
Force: push or pull*
Direction: north, south, east, west

4. 3. Which is responsible for the planets staying in their orbit?
Gravitational force between the planets and the sun *
Empty space between the stars
Weight of the planets
Density of the planets

5. 4. Venus has less mass than Earth
4. Venus has less mass than Earth. If a 50-gram object is taken from Earth to Venus, then--
The object’s mass will be more than 50 grams
The object’s mass will be less than 50 grams
The object’s weight will be more
The object’s weight will be less *
**mass does not take gravity into account**
*weight will change depending on the amount of gravity*
Greater mass of planet=greater gravitational force

6. 5. As the distance between two objects increases, the gravitational attraction between the two objects--
Remains the same
Increases
Decreases *
Becomes zero

7. 6. An object is placed at each location in the table
6. An object is placed at each location in the table. At which location does the object have the greatest weight?
Location in solar system
Gravity at surface (Earth=1)
Weight at Given Location (N)
Sun
27.9
Mercury
0.37
Venus
0.88
Earth
1.00
100
Sun*
Mercury
Venus
Earth

8. 7. Compare and contrast the inner and outer planets
7. Compare and contrast the inner and outer planets. (separated by asteroid belt)
INNER(Mercury, Venus, Earth and Mars)
BOTH
OUTER (Jupiter, Saturn, Uranus and Neptune)
Small
terrestrial planets
Spin slowly
Spaced close together
No rings
Multiple space craft visitors
Orbit the sun
Gravitational attraction
Huge
Gas Giants
Balls of gas with no surface
Spaced apart
Spin quickly
Lots of Moons
Rings
All Outer Planets visited by one space craft (Voyager 2)

9. 8. Most of the solar system is:
Made up of the Sun: somewhere between 99.8 and 99.9 percent. The rest is split between the planets and their satellites, and the comets and asteroids and the dust and gas surrounding our star.

10. 9. What is the name of the largest planet?
Sun (star not a planet)
Earth
Mercury
Jupiter **

11. 10. What is the name of the star that is the center of our solar system?
Betelgeuse
Sun*
Mira
Polaris

12. 11. Which of these planets is least like the other three?
Mercury** inner planet
Saturn :outer
Uranus: outer
Jupiter: outer

13. 12. Compared to the other planets, the inner planets are--
Larger
Closer together *
Farther from the sun
Farther from the earth
INNER(Mercury, Venus, Earth and Mars)
BOTH
OUTER (Jupiter, Saturn, Uranus and Neptune)
Small
terrestrial planets
Spin slowly
Spaced close together
No rings
Multiple space craft visitors
Orbit the sun
Gravitational attraction
Huge
Gas Giants
Balls of gas with no surface
Spaced apart
Spin quickly
Lots of Moons
Rings
All Outer Planets visited by one space craft (Voyager 2)

14. 13. What is the fourth planet from the Sun?
Earth
Neptune
Mars*
Saturn
My Very Educated Mother Just Served Us Nine Pizzas
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto

15. 14. Neptune belongs at location--w
INNER PLANETS X
OUTER PLANETS Z* Y

16. 15. The Sun belongs at location--w*
INNER PLANETS X
OUTER PLANETS Z Y

17. 16. All of the following statements belong at Location Y except--
Travels around the Sun
Ball shaped
Smaller than the sun
Outside the solar system**

18. 17. Our planet belongs at location-w
INNER PLANETS X*
OUTER PLANETS Z Y

19. 18. According to the data, which of these planets takes the longest amount of time to travel around the Sun (revolution) one time?
Planet
Average orbital speed (km/sec)
Approximate length of one revolution
Approximate length of one rotation
Mercury
47.87
88 days
59 days
Earth
29.79
365 days
24 hours
Mars
24.13
1.9 years
25 days
Saturn
9.66
29.5 years
10 hours
Neptune
5.44
164.8 years
22 hours
Mercury
Mars
Earth
Saturn*

20. 19. Which statement is supported by the data in the table?
Planet
Average orbital speed (km/sec)
Approximate length of one revolution
Approximate length of one rotation
Mercury
47.87
88 days
59 days
Earth
29.79
365 days
24 hours
Mars
24.13
1.9 years
25 days
Saturn
9.66
29.5 years
10 hours
Neptune
5.44
164.8 years
22 hours
The length of a revolution increases as the orbital speed decreases *
The length of a rotation decreases as the length of the revolution decreases
The orbital speed increases as the distance from the sun increases
The approximate length of the rotation increases as the distance from the sun increases.

21. 20. According to the data, which of these planets takes the shortest amount of time to spin on its axis (rotation) one time?
Planet
Average orbital speed (km/sec)
Approximate length of one revolution
Approximate length of one rotation
Mercury
47.87
88 days
59 days
Earth
29.79
365 days
24 hours
Mars
24.13
1.9 years
25 days
Saturn
9.66
29.5 years
10 hours
Neptune
5.44
164.8 years
22 hours
Mercury
Earth
Mars
Neptune*

22. 21. Which table correctly identifies the inner and outer planets? G*
First 4: Mercury Venus Earth Mars: inner
Last 4: Jupiter Saturn Uranus Neptune: outer
Inner planets
Outer planets
Mercury
Jupiter
Venus
Saturn
Earth
Uranus
Mars
Neptune

23. 22. Which layer of earth is composed mostly of the elements oxygen and silicon and contains the moving plates? Lithosphere

24. 23. Which layer of the earth is composed mostly of solid iron (Fe)?
Mantle
Inner core**
Crust
Lithosphere

25. 24. Which elements are most abundant in the outer core?
Silicon and aluminum
Hydrogen and lead
Iron and nickel**
Oxygen and hydrogen

26. 25. Which two elements are most abundant in the crust? (use pie chart)
Oxygen and silicon*
Silicon and aluminum
Aluminum and iron
Iron and oxygen

27. 26. Which statement best summarizes the elements in the Earth?
Elements like gold, lead, and sodium are not found in the Earth.
A limited number of elements make up most of the crust. **
Iron and silicon are more abundant than oxygen and aluminum.
Elements other than oxygen, silicon, aluminum, and iron are more abundant.

28. 27. Which layer of earth is least involved in plate tectonics?
Asthenosphere (convection currents in the upper mantle cause plates to move)
Inner core**
Mantle (contains the asthenosphere)
Lithosphere (bottom part of the crust)

29. 28. What geologic event occurs when 2 plates collide or come together?
Formation of ocean floor
Formation of an island
Formation of a mountain**
Earthquake

30. 29. What causes the plates to move?
Density of the continental crust
Temperature of the oceanic crust
Thickness of earth’s layers
Convection currents in the mantle**