Earth
Stars and Galaxies
Cells and Organisms
Rocks
Alive, Or Is It?
100
The outermost layer of the Earth.
What is the crust?
100
Bodies made of hydrogen and helium gas.
What are stars.
100
The smallest unit needed for life.
What is a cell?
100
A naturally occuring solid mixture of one or more minerals and organic matter.
What is a rock?
100
Anything that causes a reaction or change in an organism.
What is a stimulus?
200
The center of the Earth.
What is the core?
200
Clouds of dust and gas that create the next generation of stars.
What are nebulas.
200

It is made up of one or more cells.

What is an organism?

200
A naturally formed solid matter that has crystalline structure.
What is a mineral?
200
The passing of traits from one generation to the next.
What is heredity?
300
The layer of the Earth between the crust and the core.
What is the mantle?
300

Vast groupings of stars.

What are galaxies.

300
It stores the DNA of the organelle.
What is the nucleus?
300
Rocks that form when hot, liquid rock (magma) cools.
What are igneous rocks?
300
Water, air, a place to live, and food.
What are the basic needs of every organism?
400
Large pieces of the lthosphere that move around on the Earth's surface.
What are tectonic plates?
400
The planet closest to the Sun.
What is Mercury.
400
It controls all of the life processes of the cell.
What is DNA?
400
Rocks whose structure, composition, and texture have changed from those of the original rock.
What are metamorphic rocks?
400
When two parents produce offspring that share characteristics of both parents.
What is sexual reproduction?
500
Vibrations that move away from an earthquake.
What are seismic waves?
500
The planet that is no longer a planet.
What is Pluto?
500
Animals, plants, and humans.
What are multicellular organisms?
500
Rocks formed when grains of rock or minerals (sediments)are buried, squeezed together, and cemented by minerals.
What are sedimentary rocks?
500
When a single parent produces offspring that is identical to the parent.
What is asexual reproduction?
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