Show:
Plate Boundaries
Continental Drift
Geologic Time
Earth's Layers
Rocks and Fossils
100

What boundary creates crust?

Oceanic divergent boundary

100

Who proposed the idea of Continental Drift?

Alfred Wegener

100

What is the chronological tool that organizes Earth's history into units of time based on significant events called?

Geologic Time Scale

100

Hot, dense, ball of Iron in the middle of the Earth

Inner core

100

What type of rock contains fossils?

Sedimentary

200

Crust is destroyed at which boundary?

Continental convergent

200

What idea showed how continental drift happens?

Plate tectonics

200

The law of superposition states that...?

Rocks found at the bottom layer are older than rocks found at the top layer

200

Thickest layer made of solid and liquid magma

Mantle

200
Igneous rocks with large crystals cooled how?
Slowly
300

What forms at a divergent boundary between two continental plates?

Rift valley

300

What supercontinent existed 250 million years ago?

Pangaea

300

What Eon is characterized by no life, only rock and volcanoes on Earth?

Precambrian Eon

300

Thin, dense, layer of Earth made of Basalt

Oceanic crust

300

A metamorphic rock becomes foliated when pressure is ...?

Applied in one consistent direction

400

Why does the oceanic plate subduct under the continental plate?

The oceanic plate is more dense than the continental plate

400

Explain how fossils are evidence of continental drift

The same fossils are found on continents currently separated by an ocean. This shows that at one point in time, these pieces of land were connected and have moved

400

What is radioactive dating and why is it important?

Geologists can find out how old a rock is by looking at the decay of atoms. This gives an absolute (numerical) age to the rock.
400

Responsible for Earth's magnetic field

Outer core

400

Fossilization process leaves behind a dark film on a sedimentary rock

Carbonization

500

The explain the process that causes movement of tectonic plates? 

Convection currents created by hot magma rising and cool magma sinking in the mantle

500

Explain how striations are evidence of continental drift theory

Striations are evidence of glaciers. These marks are found on rocks in areas that don't have glaciers currently. This indicates these land masses were once located on different part of Earth.
500

What are the characteristics of an index fossil?

A fossil of an abundant, recognizable organism that lived for a short period of time and can be used to date rock layers

500
Continental crust is mostly made of this rock 

Granite

500

Organism has died to leave an impression or cavity in sediment that is not filled with minerals.

Mold