Science Moon Test

Composition of the moon

The moon's surface is covered with dead volcanoes, impact craters, and lava flows, some visible to the unaided stargazer.

explain why it takes the moon 29 and a half days to go through its face but only 27 1/3 days to make a complete revolution?

the moon completes one orbit of Earth with respect to the star about every 27 1/3 days also known as the sidereal month but the moon revolves around earth once with respect to the sun in about 29 1/2 days.The moon revolves around earth, earth is revolving around sun.

explain why we are not able to see the new moon

when the moon is new it's night face is facing us on Earth

Solar eclipse

-Difficult to see----small areas -are much shorter(Minutes VS hours)

Lunar eclipse:

-Seen more easily -1/2 the planet can see -They happen about the same amount as solar eclipse.

The moon's gravity of earth?

1/4

What is the length of the moon's revolution period?

27.3 days

What is the length of the moon's rotation period?

29.5 days

Why is the sidereal period 2.2 days shorter than synodic period?

A synodic month is longer than a sidereal month because the Earth-Moon system is orbiting the Sun in the same direction as the Moon is orbiting the Earth. Therefore, the Sun appears to move with respect to the stars, and it takes about 2.2 days longer for the Moon to return to the same apparent position with respect to the Sun.

What is the direction of the moon's revolution?

Counter clockwise on it's axis

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From phase to the same phase is 29.5 day......Synodic Period....(390 of revolution)

When the earth is between the sun and the moon, the moon is

Full

Explain what it meant by the term "phases of the moon".

It is the moon cycle in order

how much time elapses between full moon to next full moon?

Moon

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Moon returns to the same position with respect to the stars 27.3 days----Sidereal Period(360 of revolution)

Who was the first man to walk on the moon? When?

Neil Armstrong July 20 1969

Name the 8 phases of the moon in order starting with the new moon.

New moon, waxing crescent, First quarter, Waxing Gibbous, Full moon, Waning Gibbous, Last Quarter, Waning crescent

Can we always see the entire lit up part of the moon?

No

Explain why we see only one side of the moon?

Only one side of the moon is visible from earth because the moon rotates about its spin axis at the same rate the moon orbits the earth.

How did they find the distance from the earth to the moon?

Put a mirror on the moon, shooting a laser beam from earth.

Which month is based off the phases of the moon?

Synodic

How were the dark areas of the moon(Maria) and the mountains on the moon formed?

The Maria are formed by ancient volcanic eruption on the moon. The mountains on the moon are formed as plates collide and the crust buckles.

The changing phases of the moon are caused by

The changing position of the moon relative to the earth and the moon.

How do scientists think the moon was formed, and what evidence do they have for this theory?

The giant-impact hypothesis, suggests that Earth's Moon formed out of the debris left over from an indirect collision between Earth and an astronomical body the size of Mars. Evidence: earth samples found on moon.

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They are different because the moon moves changing the angle of the earth, sun, and moon alignment.

What would happen to earth's climate if we had no moon and why?

Without moon, the earth would sometimes tilt all the away over and lie its side in relation to its orbit, around the sun.This would make a difference in temperature and daylight. And sometimes the earth axis would be straight up and down, making night and day equally long, year round, there would be no season.