Science Quiz

Cycle that explains the never ending, constant changes rocks go through.

• Water cycle

• Oxygen cycle

• Rock cycle

Someone that studies earth’s physical structure and history

• Geologist

• Paleontologist

• Epiphytologist

————— was created to have a standardized way of chronologically defining earths history

• Rock cycle

• Geologic time scales

• Power system

Wind, moving water, glaciers, plants and animals can cause rocks to wear down and break into pieces called ?

• minerals
• rock fragments
• sediments

• soil

Three types of rocks ?

• Granite, Limestone, Clay
• Basalt, Shale, Quartzite
• Coal, Sandstone, Slate
• Igneous, Sedimentary, Metamorphic

Law that stated that any given stratum in a rock is likely older than those above it and younger than ones below it.

• Law of Superposition
• Principle of Original Horizontality
• Law of Stratification
• Law of Cross-Cutting Relationships

Formal geologic time begins at the starts of the

• Hadean Eon
• Phanerozoic Eon
• Proterozoic Eon
• Archean Eon

The size of crystals depends on how ——— the magma cools?

• quickly
• uniformly
• randomly
• slowly

When was the first geologic time scale published?

• 1905
• 1920
• 1890
• 1913

What percent of species that sued to live on earth are now extinct?

• 50%
• 75%
• 99.9%

• 85%