Rocks and minerals
Earths layers
Natural disasters
Laws in Earth's process
100

A solid mineral material forming part of the surface of the earth.

What are rocks?

100

A crack in the earths surface.

What is a fault?

100

Comes out of volcano

What is lava?

100


A buried erosional or non-depositional surface separating two rock masses or strata of different ages.

What is unconformity?

200

A solid inorganic substance of natural occurrence.

What is a mineral?

200

The outermost layer of a planet.

What is crust?

200

A rupture in the Earth's crust.

What is a volcano?

200


A form of relative dating. an axiom that forms one of the bases of the sciences

What is the law of superposition?

300

Many rocks put together into one.

What are sedimentary rocks?

300

A fluid layer about 2,400 km (1,500 mi) thick and composed of mostly iron and nickel that lies above Earth's solid inner core.

What is the earth's outer core?

300

Caused by tectonic plate motion.

What is an earthquake?

300

The process of determining an age on a specified chronology in archaeology and geology.

What is absolute dating?

400

One of the three main rock types, the others being sedimentary and metamorphic.

What is igneous?

400

A layer inside a planetary body bounded below by a core and above by a crust.

What is mantle?

400

Causes earthquakes when they move.

What are tectonic plates?

400


First proposed by Danish geological pioneer Nicholas Steno in the 17th century. The law states that layers of sediment were originally deposited horizontally under the action of gravity.

What is the law of original horizontality?

500

The rock goes through a metamorphosis, the original rock is subjected to heat and pressure, causing profound physical or chemical change.

What is metamorphic 

500

One of two cores in the earth's crust made of iron and has a radius of about 760 miles.

What is the Earth's inner core?

500

Not Lava. This hot material lies below or within the earth's crust.

What is magma?

500

An igneous intrusion is always younger than the rock it cuts across

What is the law of cross-cutting?

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