Chapter 21 - Earth Science

When the sun is closet to Early January, it is called Perihelion...

There's no surface water on the moon but there is (Fill in the blank) at poles

When the sun is near Aphelion, it is Early July....

The solar eclipse only occurs during the New Moon phase

What is the diameter of the moon?

Is it possible to have no full moons in the same month? If, yes, name the month(s) this instance would occur

How long does it takes for the Moon to complete 1 cycle of its phases?

In 14,000 AD, the name of the North Star will be....

What causes a Lunar Eclipse?

The time difference b/w a Solar day & a Sidereal day is about 4mins

It is possible to have 2 full moons in the same month

Precession is the change in the tilt

What is the estimated age of the moon?

The cycle of the Moon's phases is called the synodic month

The current name for the North Star is Polaris...

The moon completing 1 orbit around the Earth is called the Sidereal month

Daylight on the Moon & Nighttime on the moon are about the same length of time (2 weeks)

Name of the time interval b/w 1 noon & the next noon (Equals 24 hrs)

The moon completes 1 orbit around the Earth in

In relation to gravity: If you are 180lbs on Earth, how much wld you weigh on the moon (Hint divide by 6)?

The average Daytime temperature on the moon is

What's the reason that the Solar eclipse doesn't happen on the New moon phase?

There is virtually no kind of atmosphere on the moon

Solar Eclipses are safe to observe

A Revolution refers to....

The amount of gravity on the moon is about (Fill in the blank) of Earth's gravity

A slow, circular motion of the Earth's axis of rotation is called....

Lunar eclipses are safe to observe

Spinning on Earth on its axis is referred to as...

In relation to gravity: Whatever weight you are on Earth, divide it by 6 to get your weight on the moon

The Wobbling of Earth's axis is called....

What is the reason that a lunar eclipse may not appear during a full moon phase?

Earth's average distance to the sun is 53 million miles...

What is the period of Precession?

The 3 Motions of the Earth (Rotation, Revolution & Precession) involves some type of movement

How long does it take for the moon to complete one rotation on its axis?

What are the 3 names of the Motions of the Earth?

Average distance to the Earth from the moon is 239,000 miles

Average Nighttime temperature on the moon is about -243 degrees Fahrenheit

What occurs during a Solar eclipse?

When does the lunar eclipse occur?

What is the name of the actual rotation period (Equals to 23hrs, 56mins & 4 secs

The Moon's rotation & the Moon's orbital period are the same length of days

For every astronomical unit (1 AU), it equals to (Fill in the blank) million miles?