BJU Earth Science Chapter 22

Which effect is not produced by tidal forces between the earth and the moon?

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

the visible surface of the sun

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

The moon has a nearly perfect spherical shape likely because ____________.

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

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

The sun is located far from the center of the Milky Way galaxy.

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

The moon has a very thin atmosphere because it ____________.

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

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

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

a large, dark area on the surface of the moon

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

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

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

Gases in the moon's very thin atmosphere come mostly from its interior.

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

Lunar mountains appear to be ____________.

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

A total solar eclipse is usually shorter than a total lunar eclipse.

Which of the following statements about the sun's electromagnetic energy is not correct?

Scientists think that the moon has a liquid _________ core and a solid __________ core.

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

Astronomers believe that sunspots form when _____________.

Streams of plasma that rise up into and descend from the sun's corona, often forming loops, are called _____________.

Severe solar storms that can disrupt telecommunications on Earth are called ____________.

The lunar seas contain the largest masses of frozen water anywhere in the solar system outside of Earth.

the outer region of the sun's atmosphere

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

Some rilles may be cracks in the moon's crust that formed when it cooled and shrank.

Seasons are caused by the earth's motion relative to the sun and its _________.

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

The sun is composed mostly of ______________.

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

materials blasted out of a crater during a meteorite impact

Which phase of the moon does this image show?

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

A solar flare is a glowing sheet of colored light above the earth's North or South Pole.