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Gravity in Galaxies and The Solar System

Total questions: 25

Worksheet time: 2hrs 5mins

Name
Class
Date
1.

What does the strength of the force of gravity depend on?

a)

The masses of the objects and their speed.

b)

The mass and weight of the objects

c)

The masses of the objects and the distance between them

d)

The length of the object and its speed.

2.

What is the definition of inertia?

a)

The force of a push or a pull on an object

b)

The force pulling us towards the Earth

c)

increasing force because of increased mass of an object

d)

The tendency of an object to resist change in motion.

3.

What controls the orbits of objects in our solar system?

a)

Speed and light

b)

Inertia and gravity

c)

Gravity and speed

d)

Momentum and inertia

4.

Our solar system is part of the

a)

Milky Way Galaxy

b)

Andromeda Galaxy

c)

Magellan Galaxy

d)

Perseus Galaxy

5.

How many stars are estimated to be in the Milky Way Galaxy?

a)

1,000

b)

10,000

c)

1,000,000

d)

At least a billion (1,000,000,000)

6.

The gravitational force of the sun is the sole reason the planets and other bodies orbit around it, holding the solar system together.

a)

True

b)

False

7.

Any object with mass experiences gravity

a)

True

b)

False

8.

The mass of most objects are too small for them to experience gravity between them.

a)

True

b)

False

9.

As distance increases, gravitational forces:

a)

Decrease

b)

increase

c)

Disappear

d)

Stay the same

10.

As mass increases, gravitational forces:

a)

Increase

b)

decrease

c)

stay the same

d)

disappear

11.
Most of the Universe is _____
a)
filled with planets
b)
filled with stars
c)
filled with gas and dust
d)
pretty empty
12.
Which planet is tipped on its side nearly 90 degrees?
a)
Jupiter
b)
Saturn
c)
Uranus
d)
Neptune
13.

What planet is closest to the sun?

a)

Mars

b)

Earth

c)

Venus

d)

Mercury

14.

What are the four inner planets?

a)

Earth, Uranus, Mercury, Venus

b)

Mercury Venus Earth Saturn

c)

Mars, Earth , Mercury, Venus

d)

Mars, Earth, Neptune, Mercury

15.

What are the outer planets?

a)

Jupiter, Saturn, Earth, Neptune

b)

Saturn, Neptune, Mars, Uranus

c)

Uranus, Saturn, Neptune, Jupiter

d)

Mercury, Venus, Earth, Mars

16.

What is at the center of our solar system?

a)

asteroid belt

b)

Earth

c)

sun

d)

moon

17.

Which planets are made of solid surfaces and rocky cores?

a)

terrestrial

b)

gas giants

c)

outer planets

18.

Which planets are mostly made of gases?

a)

terrestrial

b)

gas giants

c)

inner planets

19.

Without gravity, the stars, planets and all objects in the universe would _______.

a)

continue to orbit each other

b)

move in a random direction

c)

move in a straight line

d)

stop moving

20.

A(n) _____ is the curved path of an object around a point/object in space.

a)

orbit

b)

rotation

c)

revolution

d)

phase

21.
Which model has greater gravitational attraction (if any)
a)
Model A
b)
Model B
c)
Both Model A and Model B (same gravity)
22.
Which system has the greater gravitational attraction between the two objects (if any)?
a)
System A
b)
System B
c)
Same gravitational attraction fro System A and System B
23.

Choose the image that has the most gravitational pull:

a)
b)
24.
The Earth doesn't totally get sucked into the Sun, because ___
a)
it's moving too slowly around it
b)
it's moving fast enough around it
c)
it's too heavy too pull in
d)
it's too far away
25.
A group of stars, gas and dust bound together by gravity is called ___
a)
an orbit
b)
the Sun
c)
a galaxy
d)
a black hole