Science Olympiad Rock Hound

The color of a mineral's powder is called ____________.

Which property describes minerals that break along smooth surfaces?

• Hardness

• color

• fracture

• cleavage

An example of an extrusive igneous rock that does not have any crystals.

• Granite

• Basalt

• Pumice

• Obsidian

What type of rock is limestone and sandstone?

• Intrusive igneous rock

• Extrusive igneous rock

• Sedimentary rock

• Metamorphic rock

This rock is changed by heat and pressure.

• Sedimentary

• Igneous

• Metamorphic

This rock is formed by erosion (continuously broken down into small fragments) and  then is compressed and  cemented together.

• Inorganic

• Igneous

• Metamorphic

• Sedimentary

This is measured on  the Mohs Scale.

• Cleavage

• Density

• Hardness

• Luster

Which rock family is composed of rocks that have been changed by heat, pressure, or chemicals?

• Sedimentary

• Metamorphic

• Lunar

• Igneous

A geologist is studying three layers of sedimentary rock in an area. The layers have not shifted from their original positions. The geologist records the relative ages of the rocks. What did the geologist use to determine the relative ages of the rocks?

• Radioactive dating

• Mineral content

• Absolute dating

• The Law of Superposition

Tags

NGSS.MS-ESS1-4

Based on the law of superposition, what is the order of these rock layers, from oldest to youngest?

• 1, 2, 3, 4

• 2, 1, 4, 3

• 3, 2, 1, 4

• 4, 3, 2, 1

Tags

NGSS.MS-ESS1-4