Name
Date
Class
Content Practice B
LESSON 2
Earth’s Moon
Directions: On each line, write the term from the word bank that correctly completes each sentence. Some terms
might be used more than once or not at all.
atmosphere
craters
cycle
emits
lava
maria
Moon
object
rays
reflects
ring
rock
rotation
waning
water
waxing
You are able to see the Moon because it (1.)
light from the
Sun. Scientists hypothesize that the Moon formed when a huge
(2.)
struck Earth. Vaporized (3.)
formed a(n) (4.)
around Earth. As the ring cooled, the
formed.
(5.)
The Moon’s surface has remained the same for several billions of years because it has no
or (7.)
. It does, however, have
(8.)
that formed from space objects that crashed into the
Moon. Light-colored streaks of blasted material called (9.)
stretch outward from some craters. Another feature found on the Moon are large dark, flat
areas called (10.)
. These formed after most impacts on the
Moon’s surface had ceased; (11.)
flowed up through the
Moon’s crust and solidified, covering many of the Moon’s craters and other features.
Highlands are another of the Moon’s features. These older areas are covered with craters and
were too high for the (12.)
that formed maria to reach.
The Moon has a lunar (13.)
(14.)
with several phases. The Moon’s
and revolution are similar in time, so the same side of the
Moon always is seen from Earth. A lunar cycle lasts four weeks and includes
(15.)
34
and (16.)
phases.
The Sun-Earth-Moon System
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
(6.)
Name
Date
Class
Key Concept Builder
LESSON 2
Earth’s Moon
Key Concept How does the Moon move around Earth?
Directions: On each line, write the term or phrase that correctly completes each sentence.
The Moon
1. Reflection: I can see the Moon because light from the Sun
.
2. Formation: The giant impact hypothesis states that
.
3. Surface: Three features found on the Moon are
,
, and
.
4. Craters: The craters that formed on the Moon have hardly changed because
.
5. Maria: These large, dark, flat areas on the Moon resulted from
6. Highlands: Two special features of highlands are that they are
and
.
7. Revolution: It takes
days for the Moon to make one revolution
around
.
8. Rotation: It takes
rotation axis.
days for the Moon to rotate once on its
9. Revolution and Rotation: The Moon makes one rotation on its axis in the same time that it
makes
.
10. Face: Because of the Moon’s period of rotation and period of revolution, the same side of the
Moon
36
.
The Sun-Earth-Moon System
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
.
Name
Date
Class
Key Concept Builder
LESSON 2
Earth’s Moon
Key Concept Why does the Moon’s appearance change?
Directions: Answer each question in the space provided.
The Moon’s Cycle and Phases
Question
Answer
What is meant by a Moon phase?
1.
What causes the phase of the Moon
to change?
2.
What is a lunar cycle?
3.
How long is one lunar cycle?
4.
When does the waxing phase occur?
5.
When does the waning phase occur?
6.
38
First Quarter (Waxing)
Full Moon (Waxing)
Last Quarter (Waning)
New Moon (Waning)
The Sun-Earth-Moon System
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Directions: Complete the chart by drawing what each Moon phase looks like as seen from Earth.
Name
Date
Class
Key Concept Builder
LESSON 2
Earth’s Moon
Key Concept Why does the Moon’s appearance change?
A
The Moon looks
like this in the sky.
G
B
Moon’s
orbit
Full moon
You don’t see the
shadowed part.
Last quarter
First quarter
You see the
sunlit part.
Last
quarter
F
First
quarter
C
Earth
The new moon phase is
not visible from Earth.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
New moon
E
D
Sunlight
Directions: Write the letter from the diagram that answers each question on the lines provided.
1. In which position would a person on Earth see a full moon?
2. In which position(s) would a person on Earth see a moon in the waxing phases?
3. In which position(s) would a person on Earth see a moon in the waning phases?
4. In which position would a person on Earth see a third quarter moon?
The Sun-Earth-Moon System
39