Moon Phases and Tides

29.5 days

How long does it take the Moon to complete a cycle of phases or a lunar month (new moon to new moon)?

Sun and Moon's gravity

What two forces cause the tides?

Revolution

What is the motion of the Moon around the Earth called?

Earth's tilt and revolution around the Sun

Why do the seasons occur on Earth?

New moon

At point 1, the Moon is a...

Waxing crescent

At point 2, the Moon is a...

1st quarter

At point 3, the Moon is a ...

Waxing gibbous

At point 4, the Moon is a...

Full moon

At point 5, the Moon is a ...

Waning gibbous

At point 6, the Moon is a ...

3rd or Last quarter

At point 7, the Moon is a ...

Waning crescent

At point 8, the Moon is a ...

Wax

When the Moon moves away from the Sun, does it wax or wane?

Wane

When the Moon moves toward the Sun, does it wax or wane?

1 day or 24 hours

How long does it take for the Earth to complete one rotation?

1 year or 1 revolution

In one year, the Earth will complete...

The Sun, Earth, and Moon are aligned

Spring tides have greater tidal ranges than neap tides because...

Less than 1/2 lit

What does crescent mean?

More than 1/2 lit

What does gibbous mean?

A and C

Which diagrams above best illustrate the positions of the Earth, Moon, and Sun during a spring tide?

B and D

Which diagrams above best illustrate the positions of the Earth, Moon, and Sun during a neap tide?

Spring tides

Which tides have the largest difference in water level between high and low tides?

Neap tides

Which tides have the smallest difference in water level between high and low tides?

Solar eclipse

What is represented by the diagram?

Waxing

If light seen from the Moon is seen on the right side of the Moon in the Northern Hemisphere, the Moon is...

Waning

If light seen from the Moon is seen on the left side of the Moon in the Northern Hemisphere, the Moon is...

50%

What percentage of the Moon is always reflecting sunlight in space?

2

Most locations experience ______high and _______low tides each day.

New and Full Moon

During which two moon phases of the moon do spring tides occur?

Light increasing

What does waxing mean?

Light decreases

What does waning mean?

1st Quarter and 3rd or Last Quarter

During which two moon phases do neap tides occur?

2

Spring tides and neap tides occur how many times each, per month?

Spring tides

Which tides occur when the sun, moon, and Earth are aligned?

Moon's gravity

What has the greatest influence on Earth's tides?

About a month

You saw a full moon on June 11, how long will you have to wait to see a full moon again?

12 hours

About how long would you have to wait to see another high tide once one has occurred?

High tide

If you were in the ocean on the opposite side of Earth from the moon, what tide would you experience?

Tides

The term used to describe the rise and fall of ocean water levels.

Neap Tides

What tides occur when the Sun, Earth, and Moon are at right angles to each other?

neap low tide

Name the tide experienced at this location (Write the answer out)

Full moon

During which of these phases will the tides be highest? (Name the moon phase)

b

Which of the following best represents the appearance of the moon on October 10, 2005? (a,b,c, or d)

B

Which diagram shows the sun (S), Earth (E), and moon (M) relative to the location of extreme (spring) tides? (A,B,C, or D)

left

Which picture shows a HIGH tide? (left or right)