Geosphere flashcards

Front

What are the 5 characteristics all minerals must have?

Back

1. Occurs naturally 2. Inorganic 3. Solid 4. Definite chemical composition 5. Repeating crystal pattern.

Front

Which mineral property is

a) least reliable

b) found by scratching with a fingernail?

c) found by rubbing on a ceramic plate?

d) How light reflects off it?

Back

a) Color

b) Hardness

c) Streak

d) Luster

Front

What scale is used to determine a mineral's hardness? What is are the softest and hardest minerals?

Back

Moh's Hardness scale

1 is softest (Ex: Talc)

10 is hardest (Ex: Diamond)

Front

Match the following:

1. 1. Large Crystals a. formed very quickly

   2. 2. Small Crystals b. Formed slowly

   3. 3. No Crystals c. formed quickly

Back

Large crystals = formed slowly

Small crystals = formed quickly

No crystals = formed very quickly

Front

Name 2 "special" properties of minerals

Back

Magnetite is magnetic

Calcite bubbles when it comes in contact with an acid.

Front

Name 2 items extracted from quarries and 2 items extracted from mines.

Back

Quarries - Sand, gravel, rocks

Mines - Gold, Copper, Iron

Front

What problems can we expect in the future regarding mineral supply and cost of mining?

Back

1. Mineral supply will diminish and be harder to extract, which will lead to increased mining costs.

Front

Compare and contrast land won ore and marine won ore

Back

Land won ore is mined underground

Marine won ore is from under the ocean

Front

Compare and contrast physical weathering and chemical weathering.

Back

Physical weathering = breaking into smaller pieces by wind or water

Chemical weathering = A chemical reaction that breaks down rock (ex: acid rain).

Front

How is igneous rock formed?

Back

Formed by cooling and hardening of molten rock from inside the earth (magma)