Rock Hound Science Olympiad

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

Tags

NGSS.MS-ESS2-3

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

​ The luster of a rock is how well it reflects ​ (a)  

• objects

• dirt

• light

Tags

NGSS.MS-PS4-2

Emily was looking at a rock and saw tiny crystals.  Emily should know that all rocks are made up of _____.

• diamonds

• minerals

• fossils

• dirt

Sheila is classifying the rocks in her collection. She knows that limestone often contains fossils. In which category of rock should she classify these rocks?

• igneous

• granite

• metamorphic

• sedimentary

Tags

NGSS.MS-LS4-1

What is a tool that Josie could use to examine the grains in a rock?

• hand lens

• ruler

• scale

• calculator

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

• Sedimentary

• Metamorphic

• Lunar

• Igneous

This rock is changed by heat and pressure.

• Sedimentary

• Igneous

• Metamorphic