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Space Systems Vocabulary and Gravity Review

Total questions: 32

Worksheet time: 21mins

Name
Class
Date
1.

A large body in space that orbits a star.

a)

Planet

b)

Satellite

c)

Moon

d)

Comet

2.

An object that revolves around another object in space

a)

Planet

b)

Satellite

c)

Moon

d)

Comet

3.

A rocky object that orbits the Sun.

a)

Asteroid

b)

Meteor

c)

Moon

d)

Comet

4.

Which object orbits object X?

a)

Object A

b)

Object B

c)

Object C

5.

What is responsible for keeping planets in orbit around the sun?

a)

density

b)

gravity

c)

photosynthesis

6.

The planets orbit around the sun because the sun has the greatest ____________.

a)

weight

b)

diameter

c)

mass

7.

What keeps the moon in orbit around Earth?

a)

tension

b)

magnetism

c)

gravity

8.

the spinning of a planet, Moon, or other object on its axis.

a)

Atmosphere

b)

Rotation

c)

Revolution

d)

Composition

9.

Imaginary line about which an object rotates

a)

Rotation

b)

Orbit

c)

Axis

d)

Composition

10.

one orbit of an object, such as a planet or satellite, in space around another object in space

a)

Rotation

b)

Composition

c)

Axis

d)

Revolution

11.

the path that one object in space follows as it revolves around another object in space

a)

Revolution

b)

Axis

c)

Orbit

d)

Rotation

12.
all of space and everything in it
a)
universe
b)
star
c)
main sequence
13.
a large artificial satellite on which people can live and work for long periods
a)
space station
b)
rover
c)
rocket
14.
a unit of distance equal to the average distance between Earth and the sun, about 150 kilometers
a)
astronomical unit
b)
light-year
c)
galaxy
15.
an object that orbits a planet
a)
satellite
b)
neutron star
c)
rover
16.

The _________ orbits Earth, while _________ orbits the Sun.

a)

Sun, Moon

b)

Moon, Earth

c)

Moon, Sun

d)

Earth, Moon

17.
The term equinox means....
a)
equal amount of day light and equal amount of night
b)
Equal amount of winter and summer
c)
Equal amounts of hot dogs for everyone
d)
The longest day of the year
18.
What do June 21 and December 21 have in common?
a)
equinox dates
b)
the moon is full
c)
solstice dates
d)
the cold fronts blow in
19.
What happens on solstice days?
a)
The Sun's rays shine straight down on the equator
b)
Day and night hours are equal
c)
Earth's North Pole leans toward or away from the Sun
20.

A solstice event occurs when

a)

the sun's rays reach their highest or lowest point in respect to the equator

b)

the sun's rays shine most directly at the equator

c)

the Earth has it's longest period of daylight hours

21.

An equinox occurs when

a)

The sun's rays reach their highest or lowest point in respect to the equator

b)

The sun's rays shine most directly on the equator

c)

The Earth experiences the greatest period of daylight hours

22.
An eclipse in space is when....
a)
one object passes through the shadow of another object.
b)
two shadows collide.
c)
the moon is in the waxing crescent phase.
d)
the Sun and Moon are side by side.
23.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
24.
Any object with mass has gravity.
a)
True
b)
Sometimes
c)
False
d)
Never
25.
As distance between two objects increase the pull of gravity 
a)
Increases
b)
Decreases
c)
Stays the same
26.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
27.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
28.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
29.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
30.
Two factors effecting the magnitude of the force of gravity between 2 objects are...
a)
mass and distance 
b)
mass and matter
c)
distance and weight 
d)
weight and mass
31.
If Earth's mass was cut in half, what would happen to your mass?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, mass is not affected by gravitational force
32.
If Earth's mass was cut in half, what would happen to your weight?
a)
Increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, weight is not affected by gravitational force

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