Geologic Timeline
What does the geologic timeline show?
The major events of Earth's history
The idea that continents move over time is called:
Continental Drift
Under water __________________ cause tsunamis
Earthquakes
What is the source of energy for all cycles on Earth?
The Sun
Weather is the condition of the ___________________ at a certain time and place.
Atmosphere
Are fossils found in deeper layers of the earth usually younger or older than fossils found in shallow layers?
Older
The supercontinent that existed millions of years ago was called:
Pangea
Pressure from within Earth's crust releasing is the cause of most _________________.
Earthquakes
What type of rock are fossils usually found in?
Sedimentary Rock
Climate is the ___________________ weather in an area over a long time.
Average
How are fossils formed?
Being buried quickly under layers of rock.
What do scientists need to turn an idea into a scientific theory?
Evidence
What are two natural hazards that commonly occur in the Ring of Fire?
Earthquakes and Volcanoes
What is precipitation?
Water falling to Earth (rain, sleet, snow, or hail)
Greenhouse gases trap ___________________ in Earth's atmosphere.
Heat
Fossils give us clues about _______________ and ________________- that live long ago.
What are three pieces of evidence that support the theory of Continental Drift?
Shape of the continents (puzzle pieces), matching rock layers on different continents, Matching fossils on different continents.
A storm surge is a large rise in sea level cause by ___________________.
Hurricanes
What process in the water cycle turns water from liquid to a gas?
Evaporation
The three main greenhouse gases are:
Carbon Dioxide
Water Vapor
Methane
During the Proterozoic Era, the sky turned blue because the atmosphere turned rich in what?
Oxygen
What are the three main types of tectonic plate boundaries?
Convergent (come together)
Divergent (move apart)
Transform (slide next to each other)
This type of natural hazard makes the land very dry and increases the risk of wildfires:
A drought
Name the three types of rock and how each type is formed
Sedimentary (compaction and cementation of sediment)
Igneous (cooled magma/lava)
Metamorphic (heat and pressure)
What are the three main fossil fuels?
Coal
Oil
Natural Gas