According to this hypothesis the continents have moved slowly to their current positions over the last 200 million years
What is continental drift
100
These are the first waves released from an Earthquake and they have a back and forth motion in the same direction
What are primary waves
100
This scientist studies fossils
What is a paleontologist
100
This is the layer of the atmosphere right outside the window, it contains 99% of the water vapor
What is the troposphere
100
This keeps harmful UV rays from entering the atmosphere
What is the magnetic field
200
A large landmass meaning 'all land'
What is Pangaea
200
This volcano is formed from layers of ash and cooled lava flows
What is a composite volcano
200
These fossils help scientists identify other fossils because they existed on Earth for short periods of time, were abundant and were wide spread geographically.
What are index fossils
200
The rotation of the Earth causes this effect when the air and water appears to turn to the right north of the equator and to the left south of the equator.
What is the Coriolis effect
200
This is the time when the Northern hemisphere is tilted away from the sun to reduce the hours of daylight we receive.
What is the winter solstice
300
These are the three plate boundaries and their movements
What convergent (move together), divergent (move apart), transform (slide past each other)
300
When the top of a volcano collapses into a partially emptied magma chamber this is formed
What is a caldera
300
Hair, tracks, or other trace evidence that an animal was in the area
What is a trace fossil
300
The recent storms we have had have moved through the area from the west to an easterly direction. This is caused by a narrow belt of strong winds called
What is the jet stream
300
During these phases the moon illuminated portion of the moon grows larger
What are the waxing phases
400
This causes the plates to move.
What are convection currents
400
The San Andreas fault is this type of fault
What is a strike-slip fault
400
This principle state that in undisturbed rock the oldest layers are on the bottom
What is the principle of superposition
400
a large, swirling, low-pressure system that forms over the warm Atlantic Ocean describes this type of storm
What is a hurricane
400
This is the closest star to Earth
What is the Sun
500
This is the rigid layer of the crust that moves around on the plastic like asthenosphere.
What is the lithosphere
500
These three factors determine if a volcanic eruption is explosive or quiet
What is silica content, pressure and water vapor
500
This is useful for dating bones, wood, and charcoal up to 75,000 years old.
What is Carbon-14
500
This is the measure of the amount of water vapor present in the air compared to the amount needed for saturation at a specific temperature
What is relative humidity
500
This consists of stars, gas and dust held together by gravity