A ball of gas that gives off heat and light.

A group of stars held together by gravity.

A cloud of dust and gas where multiple stars are born.

A word that describes the collection of all known things in space.

A ball of ice and dust that has a tail when it travels near the Sun.

A piece of rock that, after traveling through the atmosphere, lands on Earth.

A large rock in orbit in a "belt" between Mars and Jupiter.

A collection of planets, moons, and asteroids in orbit around a star.

A rocky body in orbit around a planet.

The Milky Way

A cloud of primarily Hydrogen gas that fuses into multiple stars.

A celestial body where the fusion of Hydrogen into Helium creates radiation.

A celestial structure characterized by having long, spiral arms and a bright center bulge.

A massive collection of stars held together by gravity.

A celestial body.

A celestial structure whose primary characteristics are a collection of stars held together by gravity, without any clear pattern or shape.

A celestial structure that is a collection of stars held together by gravity and has a oval shape, but lacks spiral arms.

A process that occurs when atoms collide at such high speeds and temperatures that two atoms merge into one.

The moon's phases as they occur in the same order every month.

A lunar phase with 50% of the lit side of the moon visible from Earth. The light appears on the right-hand side.

A lunar phase where 50% of the lit side of the moon is visible from Earth. The light is on the left side of the moon.

The imaginary line that passes through the north and south pole of the Earth, around which it spins.

The "spinning" of the Earth around its axis.

The "orbit" of Earth around the Sun.

Fall, Winter, Spring, Summer

A lunar phase where 0% of the lit side of the moon is visible from Earth.

A lunar phase where 100% of the lit side of the moon is visible from Earth.

Created by the gravity of the moon acting on the water of Earth's surface.

A series of phases that occur in a repeating 28 day cycle, the result of reflected sunlight on the surface of the moon.

A lunar phase with 50% of the lit side of the moon visible from Earth. The light appears on the right-hand side.

A lunar phase where 50% of the lit side of the moon is visible from Earth. The light is on the left side of the moon.

Earth is sitting at 23.5 degrees on this invisible line, around which it rotates.

This motion is responsible for creating day and night cycles on Earth.

This is responsible for creating the yearly cycle on Earth, as well as playing a role in our seasons.

Created by the tilt of the Earth on its axis.

The only lunar phase that can occur during a solar eclipse.

The only lunar phase that can occur during a lunar eclipse.

Every six hours, as the Earth rotates, this comes in or goes out.

The theory that states the surface of Earth is cracked into plates that are always moving.

The cracked surface of Earth is broken up into these.

The idea that the ocean floor is always growing wider and wider.

A land feature made of high, folded rock.

A land feature created when magma rises to the surface.

A land feature created when one tectonic plate dives under another.

A land feature created when one tectonic plate slides alongside another or cracks.

A plate boundary where two plates are pushing together, or converging.

A plate boundary where two plates are pulling apart, or diverging.

A plate boundary where plates are sliding alongside each other. Plates are NOT converging (coming together) or diverging (pulling apart).

The thick crust on which the continents sit.

A name for the "supercontinent" that existed when Earth's landmasses were all joined together.

Liquid rock that makes up the mantle of Earth.

A term used to describe when one plate of rock slides underneath another plate of rock.

A term used when one plate of rock causes another plate of rock to rise up.

An event that occurs when the plates move, creating vibrations on the surface of the Earth.

The compact, thin crust on which the oceans sit.

The term "abiotic" means non-living. Which of the following is an example of an of abiotic factor in an ecosystem?

The term "abiotic" means non-living. Which of the following is an example of an abiotic factor in an ecosystem?

The term "biotic" means living. Which of the following is an example of a biotic factor in an ecosystem?

The term "biotic" means living. Which of the following is an example of a biotic factor in an ecosystem?

Which image below is an example of a carnivore?

Which image below is an example of an herbivore?

Which organism below would be classified as a producer?

How might competition impact organisms in an ecosystem?

An ecosystem is...

Which definition best fits the term "omnivore"?

Which image below represents an autotroph?

Which image below represents a heterotroph?

What is photosynthesis?

Which organism below is likely to have cells capable of the process of photosynthesis?

Which image below demonstrates the concept of a predator/prey relationship?

According to this food web, what is likely to happen to the grasshopper population if disease kills off a large number of birds?

According to this food web, what organisms are in competition over the grasses?

What does the term biodiversity mean?

What does the term "genetic variation" mean?

Which image below represents an area with huge biodiversity?

Which image below fits the concept of "genetic variation"?

Which organism below is a heterotroph?