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PES Unit Review

Total questions: 36

Worksheet time: 18mins

Name
Class
Date
1.

Why don't we see a lot of stars in the daytime?

a)

They are covered up by the clouds.

b)

They are very far away from earth.

c)

The sun blocks out the other stars.

d)

The sun's brightness overwhelms the brightness of the stars.

2.

Why is the sun up sometimes but not other times?

a)

The sun sets every day.

b)

Earth spins once per day.

c)

The clouds cover the sun.

d)

The sun spins once per day.

3.

Why do we see differen stars and different times of year?

a)

Earth is in different places in orbit during the year.

b)

Certain stars only come out during different seasons.

c)

No one wants to look at the stars during the winter.

d)

Earth spins once per day.

4.

How does Earth move?

a)

Earth only spins.

b)

Earth goes in orbit around the sun.

c)

Earth spins each day and orbits the sun each year.

d)

Earth doesn't move.

5.

What is the effect of Earth's acis tilted at 24 degrees as it rotates?

a)

It causes gravity.

b)

It causes weather and gives us our changes in seasons.

c)

It provides us with more sunlight.

d)

It helps plants to grow.

6.

How do different stars appears as we see them from Earth?

a)

The farther away the stars are from Earth the brighter they appear.

b)

The closer to Earth the stars are, the smaller they appear.

c)

The closer to Earth the stars are, the larger they appear.

d)

All stars look bright no matter how close or far they are to Earth.

7.

If Earth spins, why don't we fall off?

a)

The atmosphere holds us in.

b)

Earth spins very slowly.

c)

Gravity pulls on all objects.

d)

Earth spins so fast, that the forces hold us in.

8.

Which way is up and which way is down?

a)

Down is always toward Earth because of Earth's pull due to the force of gravity. Up is always the opposite direction from the ground, away from Earth.

b)

Down is always the opposite direction of up.

c)

It depends on where you are.

d)

Down is always away from Earth because of Earth's pull due to the force of gravity. Down is always the opposite direction from the ground, away from Earth.

9.

TRUE or FALSE Stars are all around Earth and in every direction.

a)

TRUE

b)

FALSE

10.

TRUE or FALSE Stars are like the sun, except they are very tiny.

a)

TRUE

b)

FALSE

11.

TRUE or FALSE The sun seems brighter because it is bigger than other stars.

a)

TRUE

b)

FALSE

12.

TRUE or FALSE We only see most stars at night because the sun is too bright in the daytime.

a)

TRUE

b)

FALSE

13.

TRUE or FALSE Earth pulls objects down toward the ground with the force of gravity, so up is away from the ground, anywhere on Earth.

a)

TRUE

b)

FALSE

14.

Which star in the table is farthest from Earth?

a)

Sirius

b)

Polaris

c)

Betelgeuse

d)

Deneb

15.

Which star(s) are in our solar system?

a)

the sun, Proxima Centauri, and Betelgeuse

b)

the sun and Proxima Centauri

c)

the sun

d)

There are no stars in our solar system

16.

Why does the sun look bigger and brighter than all other stars in the sky?

a)

The sun is closer to Earth than other stars

b)

The sun is bigger than other stars.

c)

The sun is smaller than other stars.

d)

The sun is the farthest star from Earth

17.

Mr. SG and Ms. Martinez are doing a demonstration to look at the size and distance of stars. Mr. SG is holding a basketball to represent Betelgeuse and Ms. Martinez is holding a baseball to represent the Sun.


Mr. SG takes the basketball and moves 15 large steps backward away from the class, so that Ms. Martinez, holding the baseball, is closer to the class. Which answer describes a possible outcome for this demonstration?

a)

The basketball now appears bigger than it originally did.

b)

The baseball now has more weight than the basketball.

c)

The basketball now appears smaller than it originally did.

d)

The baseball now appears small than the basketball.

18.

How long does it take for Earth to ROTATE around one time?

a)

1 hour

b)

1 day

c)

1 month

d)

1 year

19.

How long does it take for Earth to orbit around the sun one time?

a)

1 hour

b)

1 day

c)

1 month

d)

1 year

20.

The picture shows the daylight side of Earth. Which best describes why Earth has day and night?

a)

The moon rotates

b)

Earth rotates

c)

The moon revolves around Earth

d)

Earth revolves around the Sun

21.

We can see Orion clearly in December. When would you expect to see this constellation again?

a)

Every day of the year

b)

Every 6 months

c)

On the same day every year

d)

Never

22.

Why does the sky look different in each nighttime section of the artifact?

a)

Earth spins on its axis, so we see different constellations every day.

b)

Earth orbits around the Sun, so we see different constellations throughout the year.

c)

Earth does not move, but the constellations do move.

d)

Earth sometimes spins and times goes around the Sun.

23.

It is daytime at location 3. Should they call location 5 right now?

a)

Yes, they should call location 5, it is daytime there.

b)

Yes, they should call location 5, it is always a good time to call.

c)

No, they should not call location 5, it is nighttime there.

d)

No, ,they should not call location 5, they are probably busy.

24.

Which arrow correctly shows DOWN?

a)

1

b)

2

c)

3

d)

4

e)

5

25.

Why doesn't person 4 fall off Earth?

a)

They're stuck to the ground.

b)

Gravity pulls objects towards the center of Earth

c)

Gravity pulls objects down.

d)

Person 4 will fall off Earth.

26.

The sun looks bigger and brighter because it is much (a)  

to Earth than other stars.

27.

The (a)   is the only star in our solar system.

28.

The sun is the only star we can see in the daytime because it

a)

looks so bright

b)

it travels around the Earth

29.

Earth spins once each day.

a)

True

b)

False

30.

The force that pulls objects toward the ground is called___

a)

force

b)

gravity

c)

daytime

d)

up

31.

Throughout the year we see different stars. But every on the same date we see the same star.

a)

True

b)

False

32.

Earth orbits the sun at the same time as it spins.

a)

true

b)

false

33.

Earth's position in its yearly (a)   determines which stars we see in the night sky.

34.

The sun is an asteroid.

a)

true

b)

false

35.

An astronomer is ___

a)

a person who travels into space

b)

an animal that howls at the stars

c)

a scientist that studies astronomy

d)

a person that sings under the stars

36.

To make a picture in your mind using information from different sources.

a)

Simulator

b)

Visualize

c)

Model

d)

Investigate