Science Chapter 7 🙃

Front 1

The moon is the ________ of the astronomical bodies we see in the sky; it is a satellite or a companion of the earth.

Back 1

Closest

Front 2

In the Bible the moon is called -

Back 2

The lesser light to rule the night

Front 3

The moon is a nonluminous body like a planet, but it has an albedo of _____, so we see it by reflected sunlight.

Back 3

O.11

Front 4

1 The moons diameter is _______mi.

2 Which is less than the width of the ___________.

Back 4

2,160

United States

Front 5

1 The moons surface area is a little more than that of ______.

2 the mass of the moon is only ______ that of the earth but also a lower density.

Back 5

1 Africa

2 1.2%

Front 6

The moon is almost a perfect sphere because-

Back 6

It rotates slowly and the faster an astronomical object spins, the more it becomes bulged at the equator and flattened at the poles.

Front 7

The gravity at the earths surface is ____ as earths average surface gravity

Back 7

One sixth

Front 8

The minimum speed an object must have to free itself from gravitational pull is called

Back 8

Escape velocity

Front 9

What is weight?

Back 9

The amount of force of gravity exerted on an object

Front 10

What is mass?

Back 10

The amount of matter in an object

Front 11

How did early astronomers know that the moon had little or no atmosphere?

Back 11

1 because the moon occults a star, if it had a dense atmosphere the star would gradually dim as the moons atmosphere passed in front of the star

2 and because of the terminator dividing the lighted side of the moon from the dark side. If the moon had a dense atmosphere, it would create a twilight zone

Front 12

1 the metric unit for measuring wieght

2 metric unit for measuring mass

Back 12

1 newtons

2 kilogram

Front 13

Who had to walk on the moon and take their own atmosphere

Back 13

Astronauts

Front 14

Streaks on the surface of the moon

Back 14

Rays

Front 15

What two ways are craters formed?

Back 15

1 when a meteors hits the surface

2 breaks in the moons crust that apparently release gas from molten material, the gases would expand blasting away surface material to form a crater

Front 16

Dark areas on the moon

What are they actually?

What did astronomers think they were?

Back 16

Maria (mare)

They are actually dark-colored lava flooded craters

Bodies of water

Front 17

What did God specially create the moon for?

Back 17

For signs, seasons, days,and years

Front 18

The largest of the maria

Back 18

Mare Imbrium

Front 19

Long, narrow delis that snake across the moon's surface

Back 19

Rills

Front 20

Moons point of closest approach

Back 20

Perigee

Front 21

The moon's most distant point of orbit

Back 21

Apogee

Front 22

Lunar month observed from the earth is about_____ days

Back 22

29 and a half

Front 23

If you watch the moon from a nearby star you would observe that its orbital period is ____ days.

Back 23

27 and one third

Front 24

A full moon is exactly _____ degrees from the Sun in the sky

Back 24

180

Front 25

Full moon that occurs nearest the time of the autumnal equinox

When is it?

Back 25

Harvest moon

September 21-23 or the vernal equinox March 21-23

Front 26

Full moon occur during one month after the Harvest Moon is called the-

Back 26

Hunters moon

Front 27

When the moon comes between the earth and the sun it can prevent some of the suns light from reaching the earth what is this called?

When does it occur?

Back 27

Solar eclipse

New moon

Front 28

When the moon covers the sun's entire disk

Where does it occur?

Back 28

Total eclipse

A narrow area on the Earth's surface that falls completely within the Umbra of the moon's shadow

Front 29

When the moon covers only part of the sun's disk, The Observer is in the penumbra of the Moon Shadow and is experiencing a ________

Back 29

partial eclipse

Front 30

When a ring-shaped portion of the sun's disk shows around the Moon

Back 30

Annular eclipse

Front 31

Bright pinpoints of light caused by sunlight shining through valleys at the moon's Edge

Back 31

Baily's beads

Front 32

Last bright sparkling bead around remaining thin solar Crescent

Back 32

Diamond ring effect

Front 33

When the moon passes into the Earth's shadow

When does this occur?

Back 33

Lunar eclipse

Full moon

Front 34

The idea that the moon was snatched out of orbit

Back 34

The capture Theory

Front 35

Why is the capture Theory wrong?

Back 35

• the moon would have bounced off or been deflected

• intense heat

Front 36

The idea that the Moon spun off from the Earth perhaps even that it was ripped out of the Pacific Ocean thus explains depth of the ocean

Back 36

The fission theory

Front 37

The idea that the Earth and Moon both accumulated from the same original cloud of dust and gas

Back 37

The accretion theory

Front 38

The theory little planet the size of Mars dark the earth a glancing blow very early in its history fragments of the earth broke away to form the Moon.

Back 38

The impact Theory

Front 39

Point away from the sun in a crescent moon

Back 39

Cusps

Front 40

Shadowed part of the moon

Sunlight reflected from the earth to the Sun and back again

Back 40

Eathshine

Front 41

The term crater comes from the Greek word ____.

Back 41

Cup

Front 42

What type of energy is the energy of moyion?

Back 42

Kinetic energy

Front 43

What are some shapes people see in the moon?

Back 43

The man in the moon

A man and a woman

The silhouette of a rabbit

An old woman picking up sticks

Or a girl reading

Front 44

The maria cover about half the moons _____ side

Back 44

Near

Front 45

How are some ways our moon is unusual?

Back 45

1 it is one hundred times larger than the average moon in the solar system

2 when compared to the size of its planet, our moon is ten times larger than any other moon except Charon.

Front 46

Charon and Pluto are like two large ______ revolving around each other.

Back 46

Asteroids

Front 47

The far side of the moon and the dark side of the moon are not the _____.

Back 47

Same

Front 48

When are the front and far side the same?

Back 48

At full moon

Front 49

The moon moves _____ per day around the earth

Back 49

13.2°

Front 50

Sunlight reflected from the earth to the moon and back again

Back 50

Earthshine

Front 51

The cusps always point _____ from the sun

Back 51

Away

Front 52

When the moon is in the same direction as the sun and above it or below it in the sky

Back 52

New moon

Front 53

The ____ is the name of the line that divides the light and dark side of the moon

Back 53

Terminator

Front 54

During the first half of the month the moon is __1____ , during the second half it is ___2___.

Back 54

1 waxing

2 waning

Front 55

By the time the moon moves yo the first quarter phase the earth has rotated about __ times.

Back 55

7

Front 56

The Hunters Moon occurs _____ Months After The Harvest moon

Back 56

One month

Front 57

During a _____ moon the far side of the moon is also the dark side

Back 57

Full

Front 58

The length of a lunar month is ____ days

Back 58

29 and a half

Front 59

In the northern hemisphere the _____ moon is the full moon that occurs nearest the time of the autumnal equinox

Back 59

Harvest

Front 60

When the moon covers Jupiter an ____ occurs

Back 60

Occultation

Front 61

Another planet hit the earth and broke apart forming the moon

Back 61

Impact theory

Front 62

The idea that the moon spun off from the earth

Back 62

The fission theory

Front 63

What is wrong with the fission theory?

Back 63

• the earth would spin to fast(how could it slow down)

• the earth would have to be 4,500+°

• the moon particles are different, they have different compositions

Front 64

The earth and the moon accumulated from the same cloud of dust and gas

Back 64

Accretion(accumulation) theory

Front 65

What is wrong with the accumulation theory?

Back 65

• there's not enough gravity to "glue" small particles together

• they have different compositions

Front 66

What's wrong with the impact theory?

Back 66

• it's improbable