SIDK

Question 1

Evaporite

Answer 1

A water-soluble mineral sediment that results from concentration and crystallization by evaporation from an aqueous solution

Question 2

Two types of evaporites:

Answer 2

1. Marine - formed in the ocean

2. Non-marine - formed in lakes and other standing bodies of water

Question 3

Contact metamorphism

Answer 3

Metamorphism due to contact with or proximity to an igneous intrusion.

Question 4

Placer deposit

Answer 4

An accumulation of valuable minerals formed by gravity separation during sedimentary processes.

Question 5

Substances commercially mined from placer deposits include:

Answer 5

• Diamonds
• Gold
• Titanium
• Rare earth metals

Question 6

What is the most important factor in determining the movement and creation of sand dunes?

Answer 6

Wind

Question 7

P-waves vs. S-waves

Answer 7

P-waves (primary)

• can travel through solid + liquid
• expansion/compression

S-waves (secondary)

• only travel through solids
• actual waves

Question 8

Freshwater resources

Answer 8

Fresh water is only 2.5 percent of the total volume of water on earth.

Of this, 70 percent is in the form of ice and permanent snow cover in mountainous regions, the Antarctic and Arctic regions.