How are minerals classified.
How do we test the hardness of rocks with?
With the Mohs Scale for Hardness
What are the three main kinds of rocks?
Igneous, Metamorphic, and Sedimentary
Is a natural land feature on Earth surface is....
Landform
Name the three layers of the Earth.
Crust, Mantle, Core
How much of Earth's surface is cover with water?
3/4
How easily the surface of a mineral can be scratched
Hardness
What are igneous rocks?
are rocks that form from molten rock
Rocks in Earth's crust are slowly broken into smaller pieces in a process called....
Weathering
True or False
A volcanic eruption can cause other natural disasters.
True
3/100
Streak
What are sedimentary rocks?
rocks that form when layers of sediments settle on top of one another and harden.
The process of carrying away weathered bits of rock is called.....
Erosion
Is a break or crack in rocks where Earth's crust can move suddenly is.....
fault
What water sources contain fresh water?
Lakes, ponds, rivers, glaciers and ice caps
Can topaz scratch quarts?
Yes, because topaz is higher on the Mohs Scale for Hardness
rocks that have changed as a result of heat and pressure
Deposition
What causes a drought?
A period of unusually dry weather
Salt water and Fresh water
True or False
Minerals are natural, nonliving solid crystals that make up rocks.
True
The process of recycling of old rock into new is an ongoing process called.....
The Rock Cycle
What is the difference between weathering and erosion?
Weathering is process where rocks in Earth's crust are slowly broken into smaller pieces. Erosion is the process of carrying away the weathered pieces.
How are the effects of a flood rapid?
A flood covers land with sand, mud, and water.
What causes water in rivers to move downhill?
The force of gravity carries the water in rivers downhill.