Rock Cycle

Igneous rock forms in regions where –

• rock is heated to melting point then cooled to a solid

• metallic minerals are put under extreme pressure

• a river deposits sand and mud over a long time

• evidence of organisms is becoming fossilized

Sedimentary rocks will most likely form an environment where -

• two land masses are colliding

• liquid rock is hardening into a solid

• minerals are being created under pressure

• particles of rocks are accumulating

Which of the following processes produce metamorphic rocks?

• Rapid burial

• Gradual cooling

• Regular deposition

• Extreme pressure

Scientists classify igneous, metamorphic, and sedimentary rocks based on their –

• shape

• color

• formation

• usefulness

Which of the following best describes the processes that form igneous rocks?

• Deposition and cementation

• Heating and extreme pressure

• Crystallization and solidification

• Erosion and compaction

Sedimentary rocks can have layers of different colors. This occurs when –

• molten rock seeps into large cracks underground

• extreme pressure causes minerals to separate

• different minerals are deposited at different times

• seasonal patterns change the rate of erosion

Which of the following is one of the final processes in the formation of sedimentary rock?

• Melting

• Cementation

• Flowing

• Separation

The presence of igneous rocks might be evidence of –

• organisms

• deposition

• coal

• volcanoes

Metamorphic rock forms where any kind of rock –

• is crystalized after being liquid rock

• contains fossils of marine organisms

• is changed by the extreme heat and pressure

• is composed of cemented sediment

In order to be classified as metamorphic, a rock must have –

• magma cooling underground

• changed with heat and pressure

• compacted sediment into layers

• formed in less than 100 years