Solar System

Question 1

What is the evidence that earth is actually a sphere?

Answer 1

1. Objects appearing on horizon

2. Shape of Earth’s shadow on the moon during an eclipse

Question 2

What was the ancient view of the Earth?

Answer 2

Flat

Question 3

What is the shape of the earth?

Answer 3

Spherical

Question 4

Where does the earth bulge?

Answer 4

At the equator

Question 5

What is the circumference of the earth?

Answer 5

About 40,000 km (24854 miles)

Question 6

What is the average distance to the sun?

Answer 6

93,000,000 miles (150,000,000 km)

Question 7

What is the length of a sidereal day?

Answer 7

23 hr 56 min

Question 8

How does the Earth have a magnetic field?

Answer 8

Due to the convection current in the mantle

Question 9

How many degrees is the magnetic pole off the rotational axis?

Answer 9

11.5 degrees

Question 10

How much is the rotational axis tilted from vertical?

Answer 10

23.5 degrees

Question 11

What causes the seasons?

Answer 11

The tilt of the Earth

Question 12

How does the tilt of the Earth change?

Answer 12

Due to the revolution around the sun

Question 13

What is the time of one revolution?

Answer 13

365 days 5 h 49 min

Question 14

How does the equinox occur?

Answer 14

When the sun is directly over the equator

Question 15

What is the result of the Equinox?

Answer 15

Day and night are equal

Question 16

When does the Equinox occur?

Answer 16

First day of spring (March 21 or 22)

Fall (Sept 22 or 23)

Question 17

What is the solstice?

Answer 17

Sun is directly overhead at its furthest point North or south of equator

Question 18

When does the solstice occur?

Answer 18

First day of summer (June 21 or 22)

Winter (Dec 21 or 22)

Question 19

When is Earth closest to the sun?

Answer 19

Jan 3

Question 20

When is Earth farthest from the sun?

Answer 20

July 4

Question 21

How long does one revolution of the moon take?

Answer 21

27.3 days

Question 22

How long is one rotation of the moon?

Answer 22

27.3 days

Question 23

What is moonlight?

Answer 23

Reflected sun light

Question 24

When does the New Moon occur?

Answer 24

Occurs when the moon is between the sun and the Earth

Question 25

What happens during a new moon?

Answer 25

Dark side is visible | Moon is present in sky, but difficult to see

Question 26

What happens during a waxing moon?

Answer 26

Lit portion of moon is increasing

Question 27

Waxing crescent-

Answer 27

Less than half of the right side of the moon is lit

Question 28

First Quarter-

Answer 28

Half of the moon is lit (right side)

Question 29

Waxing Gibbous-

Answer 29

More than half of the right side of the moon is lit

Question 30

Full Moon-

Answer 30

Entire lit side of moon is visible

Question 31

Waning Moon-

Answer 31

Lit portion is decreasing

Question 32

Waning Gibbous-

Answer 32

Over half of the left side of the moon is lit

Question 33

Third Quarter-

Answer 33

Half of the moon is lit (left side)

Question 34

Waning Crescent-

Answer 34

Less than half of the left side of the moon is lit

Question 35

What are all the phases of the moon called?

Answer 35

The Lunar Cycle

Question 36

How long is 1 lunar cycle?

Answer 36

29.5 days

Question 37

Moonrise=

Answer 37

When the moon rises on the horizon

Question 38

How much later every day does moonrise occur?

Answer 38

50 min

Question 39

Why is moonrise later every day?

Answer 39

Every day the Earth needs to catch up to the moon

Question 40

What is an eclipse?

Answer 40

When the Earth or moon blocks sunlight from reaching the other

Question 41

What is an umbra?

Answer 41

Dark, complete shadow-full eclipse

Question 42

What is a penumbra?

Answer 42

Partial, lighter shadow-partial eclipse

Question 43

What is a lunar eclipse?

Answer 43

Shadow of earth covers moon

Question 44

Is a lunar eclipse common?

Answer 44

Yes

Question 45

Does a lunar eclipse affect a big or small area?

Answer 45

Big

Question 46

What is a solar eclipse?

Answer 46

Shadow from moon blocks sun

Question 47

Is a solar eclipse common?

Answer 47

No

Question 48

Does a solar eclipse affect a big or small area?

Answer 48

Small