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Seasons&Eclipses

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.

1.

Which picture demonstrates rotation?
 a. c. b. d.

2.

When a child is getting up to go to school in Georgia, a child on the opposite side of the Northern Hemisphere, in China, is getting ready to go to bed. What is the reason for this?
 a. Earth turns on its axis. b. Earth moves around the Sun. c. The Sun turns on its axis. d. The Moon blocks the light of the Sun on the other side of Earth.

3.

Which statement best explains why there is no atmosphere on the Moon?
 a. The temperature of the Moon varies too much to develop an atmosphere. b. The Moon does not have enough gravity to hold an atmosphere. c. The Moon revolves too quickly to keep an atmosphere. d. The density of the Moon is too great to allow an atmosphere.

4.

The length of a year on Earth is determined by Earth's
 a. gravitational pull. c. rotation. b. revolution. d. axis tilt.

5.

The Moon appears to change shape because
 a. the Moon rotates. c. Earth revolves around the Sun. b. Earth rotates. d. the Moon revolves around Earth.

6.

Which explains why day and night occur on different parts of Earth?
 a. Earth rotates on its axis. c. The Sun rotates on its axis. b. Earth revolves around the Sun. d. The Sun revolves around the galaxy.

7.

There are about 24 hours in a day. What would happen to the length of a day if the rotation of Earth sped up?
 a. The length of a day would be shorter. b. The length of a day would be longer. c. The length of a day would remain the same. d. The length of a day would be unpredictable.

8.

It is about 29.5 days from one full moon to the next. This is because 29.5 days is about the time it takes for one
 a. revolution of the Moon around Earth. c. rotation of the Sun. b. revolution of Earth around the Sun. d. rotation of Earth.

9.

When the Moon goes through Earth's shadow, we see a
 a. solar eclipse. c. total eclipse. b. lunar eclipse. d. planetary eclipse.

10.

When the North Pole is tilted toward the Sun, the Southern Hemisphere experiences
 a. winter. c. summer. b. spring. d. fall.

11.

How does the number of hours of daylight compare to the number of hours of darkness on March 20, the first day of spring in the Northern Hemisphere?
 a. The hours of daylight and darkness are the same. b. There are more hours of darkness than daylight. c. There are more hours of daylight than darkness. d. The number of hours of daylight and darkness cannot be predicted in advance.

12.

Which diagram shows the Earth-Moon-Sun system arranged to cause a total solar eclipse?
 a. c. b. d.

13.

Each year, Earth moves once around
 a. Mars. c. the Sun. b. Venus. d. the Moon.

14.

Why does the amount of daylight change during the course of a year?
 a. The amount of light and heat radiated by the Sun changes at different times of the year. b. The distance between the Sun and Earth changes from summer to winter. c. The North Pole points more toward the Sun at one time of the year than another. d. Earth rotates at different speeds at different times of the year.

15.

Daylight in the Northern Hemisphere lasts longer in summer than in winter, and the change in the length of day happens in a predictable pattern. Which statement correctly explains this condition of Earth's environment?
 a. The Sun moves closer to Earth in summer and farther away in winter. b. Earth, with its tilted axis, moves around the Sun in a predictable way. c. There is a predictable change in the amount of heat and light given off by the Sun. d. Earth turns slower in summer than it does in winter.

16.

 Use the diagram below to answer this question.

When Earth, the Moon, and the Sun are in line as shown above, which could occur?
 a. An eclipse of the Sun could occur. b. An eclipse of the Moon could occur. c. The Moon could be pulled closer to the Sun. d. The speed of Earth's rotation could be increased.

17.

 Use the diagram below to answer this question.

When the Sun, the Moon, and Earth are in the same line as shown, which of the following could occur?
 a. an eclipse of the Sun b. an eclipse of the Moon c. The Moon could be pulled closer to Earth. d. The spin of Earth could be increased.

18.

Which type of eclipse occurs whenever the Moon passes through Earth's shadow?
 a. lunar c. total b. solar d. partial

19.

Which is the largest object in the solar system?
 a. Earth c. the Sun b. Jupiter d. the Moon

20.

A solar eclipse occurs when
 a. Earth blocks the Moon from the Sun. c. the Moon blocks Earth from the Sun. b. the first four planets are in a line. d. the last four planets are in a line.

21.

If you were to watch the stars all night, they would seem to
 a. stay in exactly the same place in the sky. b. move across the sky at night, as the Sun does during the day. c. go in circles around the point straight up from where you are. d. move across the sky at night, in the opposite direction that the Sun moves during the day.

22.

When the Northern Hemisphere is tilted toward the Sun, which season occurs in the Southern Hemisphere?
 a. fall c. spring b. winter d. summer

23.

At 5:00 P.M. downtown Atlanta is sunny and a flagpole casts a shadow. Which picture best approximates the position of the shadow?
 a. c. b. d.

24.

The tilt of Earth's axis causes what?
 a. days c. years b. months d. seasons

25.

The time it takes the Moon to go from a new moon to a full moon and back to a new moon is about
 a. 1 day. c. 28 days. b. 14 days. d. 365 days.

26.

Which change would result in the same season year-round, everywhere on Earth?
 a. Earth moving at least twice as fast in its orbit as it does now b. enlarging the diameter of Earth's orbit until it is much farther from the Sun c. straightening the tilt of Earth's axis so that it is no longer tilted d. changing Earth's orbit so it would always be the same distance from the Sun

27.

It is necessary to add a day to the calendar every four years because
 a. the axis of Earth is tilted. b. the revolution of Earth is not exactly 365 days. c. the gravitational pull of the Sun affects Earth's revolution. d. the Moon crosses the orbit of the Sun every 28 days.

28.

What kind of moon is necessary for a lunar eclipse?
 a. New Moon c. waxing crescent b. Full Moon d. waning crescent

29.

Earth’s revolution takes how long?
 a. one day c. one year b. one month d. one lunar cycle