Earth Science Module 22

An astronomical unit (AU) is defined as the distance between the earth and the moon.

We have a leap year because a calendar year is 365 days but it takes the earth 365.25 days to revolve around the sun.

The moon has a nearly perfect spherical shape likely because it revolves very slowly.

The core of the moon is made up of nickel, like the core of the earth.

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

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

The light side of the moon is the side of the moon that is in a shadow.

A depression on the surface of the moon usually surrounded by circular walls.

Astronomers believe that sunspots form when

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

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

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

The moon rotates twenty-seven and one third times during one revolution around the earth.

A calendar year consists of more time than it actually takes for the earth to make one full revolution around the sun.

The dark side of the moon is the side of the moon that faces away from the earth.

Several solar storms that can disrupt telecommunications on Earth are called ________.

A large, dark area on the surface of the moon.

Scientists think that the moon has liquid inner core.

The sun's electromagnetic spectrum forms a continuous spectrum from radio waves to gamma rays.

The entire range of electromagnetic waves released by the sun is called the lunar spectrum.

The leap year is added every 4 years on February 29th, every non leap year February only has 28 days.

The near side of the moon is the side of the moon that faces away from earth.

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

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

The visible spectrum contains only the waves that we can see.

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

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

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

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

What phase of the moon is below?

The structure of the moon is very similar to that of earth-thin crust, mantle, liquid outer layer & solid inner layer.

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

The longest waves of the EM spectrum appear deep red and its shortest waves appear indigo or violet.

Lunar mountains appear to be

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

About how far in the lunar month would this moon appear?

What phase of the moon is pictured below?

The moon rotates more slowly on its axis that the earth does on its axis.

The gravity of the moon is one-sixth that of Earth's.

Materials blasted out of a crater during a meteorite impact.

The moon has a very thin atmosphere because it has too little mass.

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

What moon phase is pictured below?

What moon phase is listed below?