Show:
Earth
Stars and Galaxies
Cells and Organisms
Rocks
Miscellaneous
100
The outermost layer of the Earth.
What is the crust?
100

These large space objects are mostly made of hydrogen and helium gas — our Sun is one of them. What are they called?

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

What force keeps planets orbiting around the sun?

What is gravity?

200
The center of the Earth.
What is the core?
200

These are big clouds of gas and dust in space where new stars are born. What are they called?

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

What is the chemical symbol for water?

What is H20?

300
The layer of the Earth between the crust and the core.
What is the mantle?
300
Vast groupings of stars.
What are galazies.
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

These are large pieces of the Earth's lithosphere that slowly move around on the surface and can cause earthquakes and volcanoes. What are they called?

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

This system is responsible for breaking down food into nutrients your body can use.

What is the digestive system?

500

These are vibrations that travel away from the center of an earthquake and can shake the ground. What are they called?

What are seismic waves?

500
The planet that is no longer a planet.
What is Pluto?
500

These tiny structures inside cells are responsible for producing energy.

What are mitochondria?

500
Rocks formed when grains of rock or minerals (sediments)are buried, squeezed together, and cemented by minerals.
What are sedimentary rocks?
500

This type of electromagnetic radiation has wavelengths longer than visible light but shorter than radio waves and is often used in medical imaging.


What are x-rays?