Chapter 29

Question 1

A rise or fall in the ocean surface.

Answer 1

Tide

Question 2

Reflects the change in appearance of the Moon as seen from Earth.

Answer 2

Moon phase

Question 3

Occurs when the Moon moves directly between the Sun and Earth and casts a shadow on Earth.

Answer 3

Solar eclipse

Question 4

Occurs when Earth passes between the Sun and the Moon and casts a shadow on the Moon.

Answer 4

Lunar eclipse

Question 5

The dark-coloured, flat, lava-filled regions on the Moon’s surface.

Answer 5

Maria

Question 6

A layer of dusty lunar material produced by collisions between asteroids and comets and the Moon.

Answer 6

Regolith

Question 7

How many days does it take the moon to revolve around Earth?

Answer 7

27.3 days

Question 8

A complete lunar phase cycle takes 29.5 days, what is this called?

Answer 8

Synodic month

Question 9

Do we ever see the back side of the moon?

Answer 9

No

Question 10

What causes a tide to rise or fall?

Answer 10

The gravitational pulls of the Sun and the Moon.

Question 11

What is the rise of sea level called? After the sea level rises how many hours does it take for the sea level drop?

Answer 11

It’s called a high tide. It takes about 6 hours for the sea level to drop.

Question 12

Which is farther from Earth, the Sun or the Moon?

Answer 12

The Sun

Question 13

Does the moon or the Sun cause a greater effect on Earth’s tides?

Answer 13

The Moon.

Question 14

How are the Sun, the Earth, and the Moon aligned for a Spring tide?

Answer 14

The Sun, the Earth, and the Moon are all in a straight line.

Question 15

How are the Sun, the Earth, and the Moon aligned for a neap tide?

Answer 15

An L tilted 90 degrees.

Question 16

What does the phase of the Moon you see depend on?

Answer 16

It depends on the position of the Earth, Moon, and Sun.

Question 17

When does a new moon occur?

Answer 17

When the Moon is between Earth and the Sun.

Question 18

How many phases of the moon are there?

Answer 18

8

Question 19

What is the definition of waxing phases?

Answer 19

The illuminated portion that we see appears larger each night.

Question 20

What is the definition of waning phases?

Answer 20

The illuminated portion that we see appears to diminish each night.

Question 21

What are the Moon phase names?

Answer 21

New Moon, waxing crescent, 1st quarter, waxing gibbous, full Moon, waning gibbous, 3rd quarter, and waning crescent.

Question 22

Where is the word month derived from?

Answer 22

It is derived from the word Moon.

Question 23

How is the Earth, Moon, and Sun aligned during a solar eclipse?

Answer 23

In a straight line; the Sun, Moon, and then the Earth.

Question 24

What is an umbra?

Answer 24

It is where the darkest shadow of the Moon hits the Earth; a total solar eclipse.

Question 25

What is a penumbra?

Answer 25

It is the lighter shadow of the Moon that hits Earth.

Question 26

How is the Earth, Moon, and Sun aligned during a lunar eclipse?

Answer 26

A straight line; Sun, Earth, and then the Moon.

Question 27

How are the depressions on the Moon formed?

Answer 27

From asteroids and comets hitting it.

Question 28

Are there mountains on the Moon?

Answer 28

Yes, but they are not formed like Earth’s mountains.

Question 29

Which side of the moon is thicker?

Answer 29

The dark side of the moon.

Question 30

Is the mantel of the Moon solid or a liquid.

Answer 30

It’s a solid.

Question 31

What did the Clementine spacecraft do? (2 things)

Answer 31

It confirmed the thickness of the Moon and helped provide information of minerals on the Moon.

Question 32

What did the Lunar Prospector do? (3 things)

Answer 32

It orbited the Moon and took photos of the lunar surface, confirmed that the Moon had a small, iron-rich core about 600 km in diameter, it also confirmed evidence of ice on the Moon.

Question 33

What is the Giant Impact Theory

Answer 33

A Mars sized object collided with Earth, sending debris into orbit that formed the Moon.