PMA RREVIEW #1

PMA REVIEW #1

Plate Tectonics

Rock Cycle

Minerals

Make sure you know the names of the plates and where they are on the map.

Remember the shape of the continents, not just where they are on this map.

Multiple Choice

Which feature forms at convergent boundaries?

• trench

• rift valley

• mountain range

• mid-ocean ridge

Multiple Choice

The Indo - Australian Plate (far right of plate picture) converges with the Eurasian Plate.

When two continental plates converge (collide together) what crustal feature is expected to form?

• Ocean Basin

• Rift Valley

• Mountains

• Volcanoes

Rock Cycle

Every rock can become every other type of rock

Follow the arrows to see each rock is formed

Multiple Choice

When you watch a volcano erupt molten rock, you are seeing _____

• Lava
• Magma
• Mineral Crystals
• Igneous Rocks

Multiple Choice

Extrusive igneous rocks, formed from lava above the surface, cool very quickly. Will they form large crystals or small crystals?

• Large

• Small

Multiple Choice

Which type of rock is made of layers?

• Igneous

• Metamorphic

• Sedimentary

Multiple Choice

Any rock that forms from another rock as a result of changes in heat or pressure (or both) is a:

• chemical rock

• igneous rock

• sedimentary rock

• metamorphic rock

Multiple Choice

Sedimentary rocks may contain fossils.

• True
• False

Minerals

•Hardness = resistance to being scratched

•Streak = color of powder left behind after crushing or rubbing against a hard surface

•Luster = what way light reflects off the object

•Color = least reliable as some minerals have a range of colors

Moh's Hardness Scale

•Test by scratching it against other minerals of known hardness.

•softest (talc has a value of 1) to hardest (diamond has a value of 10).

Moh's Hardness Scale

•Harder minerals CAN scratch softer minerals.

•Softer minerals can NOT scratch harder minerals

Streak Test

Porcelain plate that you rub a mineral on to see what color powder is left behind.

Helps identify a mineral

Multiple Choice

Which mineral is SOFTER than a steel nail?

• Quartz

• Diamond

• Fluorite

Multiple Choice

Which mineral property is being shown here?

• luster

• cleavage

• streak

• fracture