Show:
type of rock
mineral/rock properties
rock cycle
convection currents and ways that rocks are formed.
name the rock
100

Obsidian is a rock that is formed by the rapid cooling of lava from earth's volcanos. What type of rock is it?

An (extrusive) igneous rock

100

What is the least useful way to identify a rock?

By identifying its color

100

When metamorphic rock heats up it becomes ... ?

magma

100

Where are convection currents located?

In the asthenosphere or the lower mantle

100

This rock is a black, glassy, igneous rock with a white streak. What rock is this?

Obsidian

200
Granite is an rock found below the surface and is formed from magma. What type of rock is this? 


An (intrusive) igneous rock

200

How do you test for a minerals streak?

To scratch it on a porcelain plate

200

The rock cycle starts with ... ?

Sediment

200

the process by which solid forms, where the atoms or molecules are highly organized into a structure known as a crystal is what process.

Crystallization

200
This rock is typically white or pink with a hardness of three on moh's hardness scale. It is also a metamorphic rock. What rock is this?

Marble

300

Sandstone is formed when grains of sand are compacted and cemented together over thousands or millions of years. What type of rock is this?

A sedimentary rock

300

If one of a mineral/rock property is classified as earthy. What property is it?

Luster

300

When igneous rock erodes and weathers it becomes.. ?

Sediment

300

Igneous rock form how?

Through the cooling of lava and magma

300

This rock has a density of 3.52 g/cm cubed and has a hardness of 10 on moh's hardness scale.

Diamond

400

Marble is formed from limestone that is changed from heat and pressure in earth's crust. What type of rock is marble?

A metamorphic rock

400

What is the hardest rock according to Moh's hardness scale?

Diamond

400

How does sediment become sedimentary rock?

Through compaction/cementation.
400

Do convection currents form the wind on earth?

Yes

400

This rock has a hardness of 2.5 with a yellow streak. This rock is very expensive.

Gold

500

Phyllite is a rock formed from slate that is further metamorphosed so that very fine grained white mica achieves a preferred orientation. What type of rock is this?

A foliated metamorphic rock

500

How do you measure a minerals density?

Density= Mass/Volume

500

How does metamorphic rock become sediment?

Weathering and erosion

500

True or false. Convection currents are not needed?

False

500

This rock is an intrusive igneous rock. It has a grainy luster and is a 6-8 on moh's hardness scale.

Granite