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Astronomers, Planets, Orbits

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

3 laws of planetary motion

a)

Galileo

b)

Copernicus

c)

Newton

d)

Kepler

2.

Gravity is the reason the planets orbit the sun

a)

Newton

b)

Galileo

c)

Kepler

d)

Copernicus

3.

First to use a telescope to view the sky

a)

Kepler

b)

Newton

c)

Galileo

d)

Ptolemy

4.

Explained that the planets follow elliptical orbits

a)

Newton

b)

Galileo

c)

Copernicus

d)

Kepler

5.

Which astronomer believed in the geocentric model of the universe?

a)

Galileo

b)

Ptolemy

c)

Newton

d)

Kepler

6.

Made excellent observations of planetary motion without a telescope

a)

Galileo

b)

Copernicus

c)

Brahe

d)

Kepler

7.

Who came first?

a)

Galileo

b)

Copernicus

c)

Kepler

d)

Brahe

8.

Believed in the heliocentric model of the universe

a)

Archimede

b)

Ptolemy

c)

Galileo

d)

Aristotle

9.

Earth is the center of the solar system

a)

Newtonian Model

b)

Geocentric Model

c)

Copernican Model

d)

Heliocentric Model

10.

The measure of the flatness of a circle

a)

Epicycle

b)

Eccentricity

c)

Ellipse

d)

Semi-major axis

11.

If Jupiter had more matter, it may have become a

a)

star

b)

galaxy

c)

moon

d)

asteroid

12.

Which planet is the farthest from the sun?

a)

Jupiter

b)

Uranus

c)

Venus

d)

Saturn

13.

Which planet is not a Jovian planet?

a)

Saturn

b)

Mars

c)

Uranus

d)

Jupiter

14.

Why is pluto no longer considered a planet?

a)

Does not clear its orbit of debris

b)

Does not orbit the sun

c)

Too small

d)

Not spherical

15.

Which planets are about the same diameter?

a)

Mars and Venus

b)

Mercury and Earth

c)

Uranus and Neptune

d)

Jupiter and Saturn

16.

Farthest from the sun

a)

Mars

b)

Earth

c)

Venus

d)

Mercury

17.

Which of the following describes a terrestrial planet?

a)

Many moons

b)

Has rings

c)

Large and gaseous

d)

Closely spaced in solar system

18.

About how long ago did our solar system form?

a)

5 billion years

b)

1 billion years

c)

10 billion years

d)

20 millions years

19.

Where is The Asteroid Belt?

a)

Between Earth and Mars

b)

Between Mars and Jupiter

c)

Between Uranus and Neptune

d)

Beyond Pluto

20.

Earth's moon is the largest in the solar system

a)

True

b)

False

21.

Jovian planets rotate slowly compared to terrestrial planets

a)

True

b)

False

22.

Jovian planets are more dense than terrestrial planets

a)

True

b)

False

23.

When a meteoroid has reached the surface of the Earth it is called a meteorite

a)

True

b)

False

24.

What is the name of the line that divided the terrestrial planets from the gas planets during the formation of the solar system?

a)

Planet line

b)

Frost line

c)

Jovian line

d)

Celestial equator

25.

What event most likely caused the initial collapse of the gas and dust cloud that became the solar system?

a)

supernova or other violent explosion

b)

intense heating of the sun

c)

the rotation of the galaxy

d)

intense gravitational pull