Space Flash Cards 2

Question 1

Explain ocean tides.

Answer 1

Tides are the periodic rise and falling of large bodies of water (wind and currents make waves) produced by the gravitational attraction of the moon and sun.

Question 2

How often does the ocean swell to high and low tide?

Answer 2

Two times each.

Question 3

What space objects have the most significant effect on the ocean?

Answer 3

Sun and moon

Question 4

What tide occurs when the sun, moon, and Earth are aligned?

Answer 4

There are exceptionally strong gravitational forces causing very high and very low tides called spring tides.

Question 5

How long is the period of time between two high tides?

Answer 5

About 12 hours and 25 minutes.

Question 6

Why do both sides of Earth experience high tides at the same time?

Answer 6

The gravitational attraction of the moon causes oceans to bulge out in the direction of the moon. Another bulge occurs on the opposite side, since the Earth is also being pulled toward the moon and away from the water on the far side.

Question 7

What tide occurs when the sun and moon are not aligned?

Answer 7

The gravitational forces cancel each other out, and the tides are not as dramatically high or low. This are called neap tides.

Question 8

What is a proxigean spring tide? How often does it occur?

Answer 8

Rare, unusually high tide that occurs when the moon is both unusually close to the earth and in the new moon. If occurs once almost every 1.5 years.

Question 9

Fill in the blanks:

The ____ and____ of large bodies of _____ caused by the ___________ ____ of the ____ and Sun are tides.

Answer 9

The rise and fall of large bodies of water caused by the gravitational pull of the moon and Sun are tides.

Question 10

Give two facts for a high tide.

Answer 10

• Outward bulge of water

- Occurs twice per day

Question 11

Give two facts for a low tide.

Answer 11

• Trough left by the movement of water to the two bulges

- Occurs twice per day

Question 12

Give two facts for a spring tide.

Answer 12

• Full or new moon

- Gravity of sun and moon combine, causing extremely high and low tides

Question 13

Give two facts about a neap tide.

Answer 13

• Quarter, first,and third moons

- Gravity of sun and moon cancel out. Smaller difference between high and low tides

Question 14

What is an eclipse?

Answer 14

When the moon shadows the Earth or the Earth shadows the moon.

Question 15

Describe a solar eclipse.

Answer 15

-Solar is Latin for Sun
-Occurs when the moon passes directly between Earth and sun, blocking sunlight from Earth
(moon’s shadow on Earth)

Question 16

What is a total solar eclipse? Partial?

Answer 16

TOTAL- Light from the sun is completely blocked by the moon; within the umbra.

PARTIAL- Part of the sun is visible from Earth within the penumbra

Question 17

Describe a lunar eclipse.

Answer 17

-Lunar is Latin for moon
-Occurs when Earth blocks sunlight from reaching the moon
(Earth’s shadow on the moon)

Question 18

What is a total lunar eclipse?

Answer 18

When the moon is in Earth’s umbra, a total lunar eclipse occurs.
-Can be seen anywhere on Earth that the moon is visible.

Question 19

What is a partial lunar eclipse?

Answer 19

Occurs when the moon passes partly into the umbra of Earth’s shadow; can appear orange.

Question 20

What is the umbra?

Answer 20

The very darkest part of the moons shadow on Earth.

Question 21

What is a penumbra?

Answer 21

Larger part of the moons shadow on Earth.

Question 22

On day 1, week 1 what is the moon phase? Describe.

Answer 22

New moon 🌑 Not visible

🌍 🌝 ☀️

Question 23

On day 2-6, week 1 what is the moon phase? Describe.

Answer 23

Waxing crescent 🌒 Less than half of right side is seen

 🌝 🌍          ☀️

Question 24

On day 7, week 1 what is the moon phase? Describe.

Answer 24

First quarter 🌓 Fourth of entire moon seen on the right

🌝
🌍 ☀️

Question 25

On day 8-13, week 2 what is the moon phase? Describe.

Answer 25

Waxing gibbous 🌔 More than half of right side

🌝
🌍 ☀️

Question 26

On day 14, week 2 what is the moon phase? Describe.

Answer 26

Full moon 🌕 Complete circle

🌝 🌍 ☀️

Question 27

On day 15-20, week 3 what is the moon phase? Describe.

Answer 27

Waning gibbous 🌖 Left side seen more than half

  🌍        ☀️ 🌝

Question 28

On day 21, week 4 what is the moon phase? Describe.

Answer 28

Third quarter 🌗 Fourth of moon seen on left

🌍 ☀️
🌝

Question 29

On day 22-29, week 4 what is the moon phase? Describe.

Answer 29

Waning crescent 🌘 Left side seen less than half

🌍 ☀️
🌝

Question 30

Fill in the blanks:

The Moon revolves around _____ in an __________ (oval) _____ every __._ days which causes the ______ of the moon.

Answer 30

The Moon revolves around the Earth in and elliptical (oval) orbit very 28.5 days which causes the phases of the moon.

Question 31

Define gravity. Give the name of the force that causes tides.

Answer 31

Gravity is the force that causes things to fall towards Earth. “Tractive” force causes tides.

Question 32

Fill in the blanks:
During a solar eclipse, the shadow of the ____ falls on the _____; in a lunar eclipse, the shadow of the _____ falls on the ____.

Answer 32

During a solar eclipse, the shadow of the moon falls on the Earth; in a lunar eclipse, the shadow of the Earth falls on the moon.

Question 33

The darkest part of a shadow is called the _________; the broader, outer part is called the _________.

Answer 33

The darkest part of a shadow is called the umbra; the broader, outer part is called the penumbra.

Question 34

Why do partial eclipses of the moon occur more frequently than total solar eclipses?

Answer 34

Partial eclipses occur more frequently because the

moon’s orbit is tilted 5 degrees, therefore infrequently aligned with both the sun and the earth.

Question 35

In a total solar eclipse, the sun’s _______ is visible because the ____ blocks out the sunlight.

Answer 35

In a total solar eclipse, the sun’s corona is visible because the moon blocks out the sunlight.

Question 36

Which direction does the moon revolve around Earth?

Answer 36

Counterclockwise

Question 37

Ika, please check your email ASAP.

Answer 37

Thanks,

Zara