Earth, Moon and Sun

Patterns of stars in the sky are called

A thin disk of small particles of ice and rock around a planet is a(n) _______

The moon's surface gets very hot in direct sunlight because

What causes the phases of the moon, eclipses, and tides?

The universe bean with an explosion called the

How long a star "lives" depends on its

A flash of light in the night sky is a(n)

The "red planet" is

Earth's spinning on its axis is called its

Which planet is the smallest terrestrial planet?

Earth has seasons because its axis is tilted as it revolves around the sun

A heliocentric model of the solar system is sun-centered.

Young galaxies with giant black holes at their centers are

What is between the orbits of Mars and Jupiter?

What is a building that has one or more telescopes?

A(n) ______________ is an oval shape.

The planet with the most spectacular rings of any planet is

an object with gravity so strong that no light can escape is a(n)

When the moon is in Earth's umbra, you see a total lunar eclipse

In one year, Earth completed 365 revolutions

The light you see is called visible light

The first American to orbit Earth was Alan Shepard

The force of gravity on an object is its

The earliest stage in a star's life is called a

According to Hubble's law, the farther away a galaxy is

The path that Earth follow around the sun is called its

The inner planets are often called the _______ planets

A push or a pull is a

A tide with the smallest difference between low and high tides is called a(n)

The space race was between

When the south end of Earth's axis is tilted toward the sun...

The distance between the crest of one wave and the crest of the next wave is the wave's

What do astronomers use to measure distances to nearby stars?

What is a huge group of single stars, star systems, star clusters, dust, and gas

A meteoroid that passes through the atmosphere and hits Earth's surface is a(n)

A lunar eclipse occurs only when the moon is in the _______ phase.

A loose collection of ice, dust, and small particles that orbits the sun is a(n)

The speed of a rocket in a given direction is its

A solar eclipse occurs during a full moon when Earth is directly between the moon and the sun

What are loops of gas on the sun that link different pats of sunspot regions together

A day on which the sun is overheard at either 23.5 degrees north or south is called a(n)

A______________ galaxy looks like a round or flattened ball

The inner planets all have

When you look at an image of the sun you are looking at the chromosphere

A device used by astronomers to discover the elements found in stars is a(n) __________

A(n) _______ telescope focuses light through lenses

The darkest part of the moon's shadow is the

Areas of gas on the sun that are cooler than the gases around them are called _______

A(n) object with gravity so strong that no light can escape is a(n)

The scientist who first used a telescope to support the heliocentric model was

What process provides the sun with energy?

Astronomers think that in the future the universe will continue to

The tendency of an object to resist a change in motion is

Maria on the moon are