Chapter 18 Study Guide

Question 1

Explain the difference between revolution and rotation

Answer 1

Rotation: day cycle
Revolution: year cycle

Question 2

How long does Earth’s rotation and revolution take what way does it relate to time?

Answer 2

Rotation: 24 hours
Revolution: 365.25
Rotation is about a day, revolution is about a year

Question 3

What do we all the different shapes of the moon we see? In other words, the Lunar _____

Answer 3

Cycle

Question 4

How many days long is the Moon/Lunar cycle and in what why does it relate to time?

Answer 4

29.4 and about a month

Question 5

What is the name of the Moon phase when the Moon is mostly not visible to us?

Answer 5

New Moon

Question 6

What causes Earth to experience day and night?

Answer 6

The rotation of the Earth and it’s axis

Question 7

Why do we always see the same side of the Moon?

Answer 7

The Earth rotates faster than the moon does

Question 8

Name three features of the Moon’s surface

Answer 8

Craters, highlands, and marias

Question 9

When the North Pole is pointed more towards the Sun, the Northern Hemisphere will experience what season and why?

Answer 9

Summer because we get the direct light

Question 10

When we experience a New Moon up to a Full Moon, do we see an increasing or decreasing amount?

Answer 10

Increasing

Question 11

What order do the Earth, Sun, and Moon need to align for a lunar eclipse to occur?

Answer 11

Sun, Earth, Moon

Question 12

What order do the Earth, Sun, and Moon need to align for a solar eclipse to occur?

Answer 12

Sun, Moon, Earth

Question 13

What are tides and what is chiefly responsible for tides?

Answer 13

Tides are water from the ocean going onto the shore; the moon

Question 14

What alignments of the Moon, Sun, and Earth, cause the greatest (highest/lowest aka: Spring) tides?

Answer 14

Sun, Earth, Moon

Question 15

What is the name of the process at the core of the Sun that produces energy?

Answer 15

Nuclear Fusion

Question 16

Why does the moon lack an atmosphere?

Answer 16

It’s too small and close to Earth

Question 17

How does our textbook or my slide define a star?

Answer 17

A big hot ball of gas held together by gravity

Question 18

Define aurora

Answer 18

A phenomenon that occurs when Earth’s atmosphere is energized by solar winds

Question 19

Define Sunspot

Answer 19

An area of gas on the Sun that is cooler than the gases around it; sunspots appear as dark spots on the Sun’s photosphere.

Question 20

Define Solar Wind

Answer 20

Electrically charged mix of protons and electrons that come from the tails of comets

Question 21

What do we think caused the large craters on the Moon’s surface?

Answer 21

Asteroids and meteors

Question 22

A day on the Moon is ______ Earth days

Answer 22

22.3

Question 23

What two factors dictate the strength of gravitational pull?

Answer 23

Mass and distance

Question 24

True or False: Our Sun is considered average in size relative to other stars?

Answer 24

True