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Unit 1 Review - Solar System and Space Exploration

Total questions: 14

Worksheet time: 3hrs 47mins

Name
Class
Date
1.
Which object do these characteristics best describe?
- Made up of ice and dust
- Orbit the sun
- Form tails when they pass closer to the sun
a)
Asteroid
b)
Meteor
c)
Comet
d)
Moon
2.
Which object do these characteristics best describe?
- Dense, composed mostly of rock and metal
- Located between the sun and the asteroid belt
- Rotate slowly
- No rings, few moons
a)
Moons
b)
Inner planets
c)
Outer planets
d)
Comets
3.
Which characteristic of the sun keeps our solar system's planets orbiting the sun?
a)
high temperature
b)
absolute luminosity
c)
gaseous composition
d)
gravitational pull
4.
What is the main function of the ozone layer?
a)
Enables us to have drinking water
b)
Protects Earth from the sun's ultraviolet radiation
c)
Creates heat for the Earth
d)
Enables us to have air to breathe
5.
Which of these is NOT a characteristic of Earth that allows life to exist?
a)
Presence and composition of an atmosphere
b)
Year-long revolution around the sun
c)
Liquid water
d)
Temperature range conducive to life
6.
A characteristic of Earth that allows life to exist is its atmosphere that contains water vapor and carbon dioxide.  These greenhouse gases are important because they - 
a)
protect against magnetic particles
b)
create Earth's gravitational field
c)
trap thermal energy in the atmosphere
d)
are substances animals need to breathe
7.
Dense, terrestrial planets composed mostly of rock and metal are known as the _____________.
a)
Inner planets
b)
Outer planets
8.
Which of the following planets is an inner planet?
a)
Jupiter
b)
Venus
c)
Io
d)
Neptune
9.
The large, gaseous planets are also known as ____________.
a)
Inner planets
b)
Outer planets
10.
Which of the following is an outer planet?
a)
Mercury
b)
Venus
c)
Neptune
d)
Ganymede
11.
Earth has water that exists in all three states (solid, liquid, and gas).  What makes this possible?
a)
Earth's composition
b)
Earth's polar ice caps
c)
Earth's clouds
d)
Earth's rotation and distance from the sun
12.
Which of the following characteristics is the most significant reason for why the outer planets are not likely to support life?
a)
Distance from the sun - not enough heat
b)
No regular seasons
c)
Size - too large
d)
Size - too strong of a gravitational pull
13.
What force governs the motion of all objects in our solar system?
a)
Friction
b)
Motion
c)
Gravity
d)
Inertia
14.
What type of equipment takes detailed images and gathers other information from the surface of Mars to send back to Earth?
a)
Lunar rovers
b)
Microscopes
c)
Probes
d)
Telescopes