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100

A scale from 1–10 used to measure how hard a mineral is.

What is Moh's Scale of Hardness?

100

crack in Earth’s crust where movement occurs.

What is a fault?


100

rocks cool quickly on Earth’s surface.

What is extrusive?

100

The study of space, stars, planets, and the universe

What is astronomy?

100

Groups of stars that form patterns in the sky.

What is a constellation?
200

The force that pulls objects toward each other.

What is gravity?

200

What something is made of.

What is composition?

200

Scientist who explained gravity and laws of motion

Who is Isaac Newton?

200

A plate boundary where plates slide past each other.

What is a transform boundary?

200

A naturally occurring, inorganic solid with a specific chemical makeup and crystal structure.

What is a mineral?

300

A fossil showing evidence of an organism’s activity, like footprints or burrows.

What is a trace fossil?

300

A space object made of ice, dust, and rock that forms a glowing tail near the Sun.

What is a comet?

300

igneous rocks cool slowly underground

What is intrusive?

300

Unique characteristics used to identify minerals, such as magnetism, fluorescence, taste, or reaction to acid.

What are special properties of minerals?

300

Scientist who improved the telescope and supported the idea that planets orbit the Sun

Who is Galileo Galilei?

400

The planet 2nd closest to the Sun

What is Venus?

400

slow natural processes shape Earth over time

What is uniformitarianism?

400

is the streak of light when it enters Earth’s atmosphere

What is a meteor?

400

Astronomer who proposed that the Sun is the center of the solar system

Who is Nicolaus Copernicus?

400

sudden events cause major changes.

What is catastrophism?

500

Determining the age of rocks or fossils by comparing them to others.

What is relative dating?

500

Finding the exact age of rocks or fossils using radioactive elements.

What is absolute dating?
500

The process where new ocean crust forms at mid-ocean ridges.

What is sea floor spreading?

500

Layers of rock or soil.

What is strata?

500

Restoring land after mining or other environmental damage.

What is reclamation?

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