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Astronomy - Solar System

Total questions: 15

Worksheet time: 11mins

Name
Class
Date
1.

How old is our solar system?

a)

4.6 Billion Years

b)

4.6 Million Years

c)

4.8 Billion Years

d)

4.8 Million Years

2.

Identify the picture.

a)

Pillars of Creation

b)

Worm Nebula

c)

Orion Nebula

d)

Caterpillar Nebula

3.

Which nebula contains the Pillars of Creation?

a)

Eagle Nebula

b)

Trifid Nebula

c)

Lagoon Nebula

d)

Omega Nebula

4.
______ is a force that causes dust particles to stick together in a nebula.
a)
nuclear fusion
b)
gravity
c)
hydrogen
d)
iron
5.
All stars begin as a __________?
a)
giant
b)
black hole
c)
white dwarf
d)
nebula
6.
Stars are formed in a large cloud of gas and dust called a
a)
cumulonimbus cloud
b)
nebula
c)
neutron star
d)
black hole
7.
Nebula's are mixtures of gases and what?
a)
clouds
b)
stars
c)
tiny particles
d)
dust
8.
the planets of the solar system formed as 
a)
the center of the gas cloud cooled
b)
planetesimals flattened into a rotating disk
c)
planetesimals collided into one another
d)
the sun absorbed extra gas and dust from the solar system
9.
What force acted on the massive nebula to collapse it and eventually form our sun?
a)
electrostatic force
b)
strong force
c)
 weak force
d)
gravity
10.
Small bodies in the beginning that later became planets
a)
Planetesimals
b)
Atom
c)
Element
d)
Hypothesis
11.

Which of the following statements best describes the characteristics of the terrestrial planets?

a)

small, dense, rocky surfaces

b)

large, planetary rings; many moons

c)

rocky cores; close to sun; surface craters

d)

made up of hydrogen and helium; small; close to sun

12.

What is the order of the distances of the terrestrial planets from the Sun, from farthest to closest?

a)

Mars, Venus, Earth, Mercury

b)

Mars, Earth, Venus, Mercury

c)

Mercury, Venus, Earth, Mars

d)

Venus, Earth, Mars, Mercury

13.

This planet is mostly covered by liquid water.

a)

Mars

b)

Venus

c)

Earth

d)

Mercury

14.

The closer and smaller an object is, the stronger the gravitational pull.

a)

True

b)

False

15.

What holds a star together?

a)

gravity and pressure

b)

gravity and inertia

c)

gravity and star dust and gas

d)

gravity and nebulas