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Science 8 Space

Total questions: 47

Worksheet time: 1hrs 13mins

Name
Class
Date
1.
How long does it take for the Earth to make one full orbit around the Sun?
a)
one day
b)
one week
c)
one month
d)
one year
2.
The Earth is rotating on its axis, creating _____
a)
the 12 months
b)
the years
c)
the seasons
d)
day and night
3.

When the Earth completes a full revolution around the Sun, it has completed approximately _____ rotations or days

a)
7
b)
30
c)
91
d)
365
4.
What looks to be the motion of the Sun in the sky is really caused by the motion of _____
a)
the Earth
b)
the stars
c)
the planets
d)
the Earth's axis
5.
The spinning movement of the Earth about its axis is called the Earth's _____
a)
revolution
b)
rotation
c)
precession
d)
orbit
6.
The movement of the Earth around the Sun is called its _____
a)
revolution
b)
rotation
c)
precession
d)
gyration
7.
When the part of the world that you're living in is leaning towards the Sun, its _____
a)
winter
b)
spring
c)
summer
d)
fall
8.
When the part of the world that you're living in is leaning away from the Sun, its _____
a)
winter
b)
spring
c)
summer
d)
autumn
9.
Why do we experience the changing of the season on the earth?
a)
distance from the sun
b)
rotation of the earth
c)
change in solar output
d)

tilt of the earth's axis

10.
Why is the Equator warmest?
a)
Because it is closest to the sun.
b)
Because it receives the most direct sunlight
c)
Because no clouds form here.
d)
Because it is far from the sun
11.
Long sound waves are...
a)
high pitched
b)
low pitched
c)
medium pitched
12.
Short sound waves are...
a)
high pitched
b)
low pitched
c)
medium pitched
13.
When the car moves AWAY from you, its horn seems...
a)
Low pitched
b)
High pitched
c)
Normal
14.
When an ambulance move TOWARD you it sounds ________ pitched. 
a)
high
b)
low
c)
medium
15.
What do the light waves of a galaxy that is moving AWAY from us look like?
a)
red shifted
b)
blue shifted
c)
green shifted
d)
yellow shifted
16.
The vast majority of galaxies in our universe are moving away from us.  We know this because we observe __________ in the galaxies absorption spectra.
a)
Redshift
b)
Blueshift
c)
Turbulance
d)
Superposition
17.

Which element(s) is/are found in the star's spectra below?

a)

Hydrogen only

b)

Hydrogen & Helium

c)

Calcium only

d)

Hydrogen & Calcium

18.

What is a spectroscope used for?

a)

A spectroscope is used for measuring the temperature of objects.

b)

A spectroscope is used for capturing images of distant objects.

c)

A spectroscope is used for detecting radio waves.

d)

A spectroscope is used for analyzing the wavelengths of a light source.

19.

How does a spectroscope work?

a)

A spectroscope works by amplifying the intensity of light.

b)

A spectroscope works by converting light into sound waves.

c)

A spectroscope works by measuring the temperature of light.

d)

A spectroscope works by separating light into its different wavelengths or colors.

20.

How can you identify elements using a spectroscope?

a)

By analyzing the sound produced by the element

b)

By observing the physical properties of the element

c)

By measuring the temperature of the element

d)

By analyzing the light emitted or absorbed by the element

21.
This unknown star contains 
a)
beryllium
b)
copper
c)
manganese
d)
strontium
22.

Which two element make up most of the sun?

a)

helium and hydrogen

b)

ammonia and methane

c)

hydrogen and oxygen

d)

oxygen and helium

23.
If a star is being observed from Earth and it's light has shifted towards the blue side of the electromagnetic spectrum it would be...
a)

Moving towards the Earth

b)

Moving away from the Earth

c)

This is a trick question that cannot be answered

d)

It isn't a star, it is a very large blueberry.

24.

By studying the spectra of stars, scientists were able to see redshifting, indicating the universe is ____________

a)

shrinking

b)

expanding

c)

not moving

d)

static

25.

Which is newtons 3rd law

a)

for every thing there is reaction

b)

for every reaction there is a unusual action

c)

For every reaction there is an equal and opposite reaction

d)

for every reaction there is an good action

26.

The tendency of objects to resist a change in motion is called:

a)

Friction

b)

Inertia

c)

Gravity

d)

Velocity

27.

In referring to how much matter a body contains, we use the term:

a)

Volume

b)

Weight

c)

Mass

28.
a)
1st
b)
2nd
c)
3rd
d)
law of motion
29.
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
30.
A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't.
a)
The Law of Inertia (1st law)
b)
The Law of Acceleration (2nd law)
c)
The Law of Conservation of Momentum
d)
Action Reaction Law (3rd law)
31.
What Unit do we Measure Force in? 
a)
Newtons
b)
Joules
c)
Force
d)
Kilograms
32.
A 20 kg bike accelerates at 10 m/s2.  what was the force
a)
25 Newtons
b)
20 Newtons
c)
200 Newtons
d)
10 Newtons
33.
Newton's third law states that any action will have a(n) _______ and ______ reaction
a)
Equal and similar
b)
Equal and opposite
c)
Equal and different
d)
Greater and opposite
34.
What is the acceleration of an object traveling at a constant velocity?
a)
10 m/s2
b)
0 m/s2
c)
250 m/s2
d)
20 m/s2
35.
What are the appropriate units to describe acceleration?
a)
m/s
b)
m/s2
c)
cm
d)
there are no units associated with acceleration
36.
Any object with mass has gravity.
a)
True
b)
Sometimes
c)
False
d)
Never
37.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
38.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
39.
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
40.
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
41.
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, your mass is not affected by Earth's mass

42.
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
43.

What causes an object to fall faster?

a)

Smaller surface area

b)

Larger surface area

c)

If it has a parachute

d)

If it is softer

44.

Look at the pictures of the cars. Which car will have the most air resistance force acting upon it? They will be moving at the same speed.

a)
b)
c)
d)

All will have equal air resistance force.

45.

When dropped from the same distance, which will fall to the floor faster?

a)
b)
46.

Which two of these forces act on parachutes?

a)

Air Resistance

b)

Gravity

c)

Thrust

d)

Kinetic Energy

47.

Air resistance is a force caused by...

a)

Water pushing against moving objects

b)

Air pushing against moving objects

c)

Gravity pushing against moving objects

d)

Normal force pushing against moving objects

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