Earth Science Study Guide

The moon has a nearly perfect spherical shape likely because

the outer region of the sun's atmosphere

In what lunar phase must the moon be during a total lunar eclipse?

Motion of the sun through the sky caused by the fact that we are viewing it from a moving Earth

the dark areas on the surface of the sun

the classification of a coronal mass ejection

The sun doesn’t actually move, though it appears to travel among the stars.

In the image below, the arrow is pointing to a

the lower layer of the sun's atmosphere

Seasons are caused by the earth’s motion relative to the sun and its

The moon is nearly spherical because of its fast rate of rotation.

A month is the amount of time it takes

The point in the moon’s orbit when it is farthest from the earth is called its

During the first half of the lunar month the moon is said to be

In the image below, the arrow is pointing to a(n)

the point in the moon's orbit where it is closest to the earth

We can observe how the sun rotates on its axis because of the movement of

The sun's surface exists in what state of matter?

Large, flat regions of the moon’s surface that are made of hardened basaltic lava are called

the visible surface of the sun

occurs when the moon is in line with the earth and the sun

The entire range of electromagnetic waves released by the sun is called the solar

The process of nuclear fission powers the sun.

In the image below, the arrow is pointing to a(n)

associated with some craters on the moon that were formed by meteor impacts

Compared with the earth, the average density of the moon is

What is the solar spectrum?

How many times does the moon rotate during one revolution around the earth?

the region within the sun where energy travels primarily as electromagnetic waves

The moon has long narrow valleys located mainly in the level plains called

Day, month, and year are all defined according to the motions of the sun, moon, and earth

The line that divides the illuminated and shadowed sides of the moon is called the

Without the sun, life on Earth would not be possible.

Earth tides are the changes of local ocean height one or more times a day at a given location.

The difference between visible light and forms of electromagnetic waves is that we can see it.

In what lunar phase must the moon be during a total solar eclipse?

Scientists believe that the moon’s interior structure is similar to Earth’s

Severe solar storms that can disrupt telecommunications on Earth are called

the pointed jets on the chromosphere

In the image below, the arrow is pointing to a(n)

The back side and the dark side of the moon are the same.

Moon has phases due to position of the earth, moon, sun so the light is visible from earth.

How does the moon's surface gravity compare with Earth’s?

The solar wind is just a continuation of the sun's atmosphere.

Hot plasma rises to the surface, cools, and descends into the sun's interior again in the sun’s

Astronomers believe that sunspots form when

A solar eclipse occurs when the ____ is between the ____ and the sun.

materials blasted out of a crater during a meteorite impact

An astronomical unit (AU) is defined as the distance between

The apparent path that the sun follows through the stars as seen from Earth's perspective is

The seasons are caused by the_____ tilt and its movement around the ____.

We know that the moon's interior structure is similar to Earth's from collecting data on

A day is the amount of time it takes the _____ to complete one full rotation.

Which of the following does not belong with the others?

a large, dark area on the surface of the moon

In what part of the sun does fusion occur?

The sun is composed mostly of

a depression on the surface of the moon usually surrounded by circular walls

We call the 365 named days from January 1st to December 31st a(n) __________ year.

In the Southern Hemisphere, the vernal equinox occurs in mid-

Most of the radiated energy from the sun travels in the form of protons and neutrons.

A year is the amount of time it takes the