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8th-DA 3 Test Review-28 Feb 19

Total questions: 38

Worksheet time: 19mins

Name
Class
Date
1.

Which of the following statements about Earth's seasons is true?

a)

We have summer when the Earth is closest in its orbit around the sun

b)

We have seasons because the tilt of Earth's axis changes from + 23.5 degrees to -23. 5 degrees over the course of a year.

c)

The earth's axis is tilted at a constant 23.5 degrees as it revolves around the sun

d)

The output of the Sun's radiation varies over the course of a year.

2.

Which image shows when it is winter in the southern hemisphere?

a)

A

b)

B

c)

C

d)

D

3.

Which image shows when it is spring in the southern hemisphere?

a)

A

b)

B

c)

C

d)

D

4.

Which of the following pictures shows the cause of Earth's day and night/

a)
b)
c)
d)
5.

Which of the following pictures shows the cause of Earth's seasons

a)
b)
c)
d)
6.

What moon would you expect to see on day 40?

a)
b)
c)
d)
e)
7.

What moon would you expect to see on days 28 and 58?

a)
b)
c)
d)
e)
8.

What position will the new moon occur in?

a)

7

b)

5

c)

3

d)

1

9.

What position will the 3rd quarter moon occur in?

a)

7

b)

5

c)

3

d)

1

10.

What positions will neap tides occur in?

a)

7

b)

5

c)

3

d)

1

11.

What positions will spring tides occur in?

a)

7

b)

5

c)

3

d)

1

12.

Which star is the coolest?

a)

Sirius B

b)

Deneb

c)

Proxima Centuri

d)

Betelgeux

13.

Which star(s) is(are) the brightest?

a)

Sirius B

b)

Deneb

c)

Proxima Centuri

d)

Betelgeux

14.

What is the speed of the object in segment A?

a)

10 m/s

b)

20 m/s

c)

0.1 m/s

d)

0.2 m/s

15.

How much force is required to accelerate an English Swallow with a mass of 0.2 kg at 20 m/s2

a)

40 Newtons

b)

4 Newtons

c)

0.4 Newtons

d)

Not enough information is available.

16.

Where do astronomers believe the sun is located in the Milky Way Galaxy

a)

Very near the center/middle

b)

Very near the very edge.

c)

About 2/3 to 3/4 away from the middle/center

d)

Midway between the center and the very edge.

17.

Where do astronomers believe the sun is located in the Milky Way Galaxy

a)

Very near the center/middle

b)

Very near the very edge.

c)

About 3/4 away from the middle/center

d)

Half way between the center and the very edge.

18.

What position might a lunar eclipse occur in ?

a)

7

b)

5

c)

3

d)

1

19.

Why does the sun have less of an effect on tides than the moon?

a)

It is not solid like the moon

b)

The sun's rays cancel out its gravity

c)

The sun is much farther away from the earth than the moon is.

d)

The moon can block out the sun's rays during a lunar eclipse

20.

The nearest star to our sun is Proxima Centauri which is 4 light years (ly) away. If a spaceship could travel at 1/4 the speed of light how long would it take to travel the distance?

a)

1 ly

b)

4 ly

c)

8 ly

d)

16 ly

21.

Scientists have determined that objects in space are moving away from us by measuring ________?

a)

Oscillating Shift

b)

Red Shift

c)

Blue Shift

d)

Gamma Shift

22.

This object is tens of thousands of light years across and contains billions of stars

a)

Nebula

b)

Star

c)

Galaxy

d)

Comet

e)

Meteor

23.

This object is made of gas and dust and may be several light years in size.

a)

Nebula

b)

Star

c)

Galaxy

d)

Comet

e)

Meteor

24.

This object is made mainly of hydrogen gas and is undergoing fusion while giving off large amounts of light.

a)

Nebula

b)

Star

c)

Galaxy

d)

Comet

e)

Meteor

25.

This object resembles a star with a tail shaped like a fan.

a)

Nebula

b)

Star

c)

Galaxy

d)

Comet

e)

Meteor

26.

This object is incorrectly called a shooting star.

a)

Nebula

b)

Star

c)

Galaxy

d)

Comet

e)

Meteor

27.

Approximately how long does it take for the moon to go from one full moon phase to the next

a)

About a month

b)

14-15 days

c)

30 days

d)

It depends how many days are in a month.

28.

Approximately how long does it take for the moon to go from one full moon phase to the new moon phase.

a)

About a month

b)

14-15 days

c)

30 days

d)

It depends how many days are in a month.

29.

Our sun is a _________?

a)

main sequence star

b)

white dwarf

c)

yellow dwarf

d)

half lit and half dark.

30.

What kind of weather will St. Louis experience in the next 48 hours.

a)

Warmer, dry weather

b)

Rain showers and thunderstorms followed by cooler temperatures

c)

Warmer with light and steady rain for several days

d)

Much hotter and wetter weather

31.

What kind of weather is Dallas experiencing?

a)

Low pressure with clear skies

b)

Low pressure with cloudy skies

c)

High pressure with clear skies

d)

High pressure with cloudy skies

32.

Where are hurricanes most likely to form?

a)

Very close to the equator

b)

North of the Tropic of Cancer

c)

South of the Tropic of Capricorn

d)

60-90 degrees north or south latitude

33.

This equation is balanced.

a)

Vrai

b)

Faux

c)

True

d)

False

34.

What will happen to the coin when the card is pulled out quickly.

a)

It will stay with the card

b)

It will fall in the glass

c)

It will stay with the card if it is glued to it

d)

The sun is always half lit and half dark.

35.

What is the net force on the object?

a)

zero

b)

50 N

c)

25 N

d)

Not enough information is known

36.

For the object to have zero net force it must be at rest.

a)

True

b)

False

37.

Which cannonball has the greatest kinetic energy

a)

B

b)

C

c)

D

d)

E

38.

Which two elements have similar reactive qualities?

a)

Li and Rb

b)

Li and Be

c)

Na and Mg

d)

Na and Cl