Layers of the Earth
What is the thinnest layer of the earth called?
Your choices are: Crust, Mantle, Outer Core, Inner Core
Crust
What is the theory that explains the movement of Earth's plates?
Plate tectonics
This type of rock forms when melted rock cools and hardens.
Igneous Rock
What is the geologic time scale used for?
B) Organizing Earth's history into time periods
What is the name of the supercontinent that existed millions of years ago?
Pangea
Which layer lies just below Earth's crust?
Your choices are:
Crust, Mantle, Outer Core, Inner Core
Mantle
What do we call the giant pieces of Earth's lithosphere?
Tectonic plates
This process breaks down rocks into smaller pieces over time, helping form sedimentary rocks.
Weathering
Which is the longest unit of time in the geologic time scale?
Eon
What evidence supports the idea that Pangaea once existed?
A) Similar fossils found on different continents
B) Continents that fit together like puzzle pieces
C) Matching mountain ranges on different continents
D) All of the above
All of the above
Which layer is made up of liquid iron and nickel?
Choices are: Crust, Mantle, Outer Core, Inner Core
Outer Core
What is it called when two plates move away from each other?
Your choices are: Divergent boundary or Convergent boundary
Divergent boundary
Sedimentary rocks are formed through this process, where layers of sediment are pressed and stuck together.
Compaction / Cementation
What was one of the key factors that allowed more complex life to develop?
A) Increase in oxygen levels due to photosynthesis
B) Decrease in oxygen levels due to increased volcanic activity
C) Increase in food for animals to eat
A) Increase in oxygen levels due to photosynthesis
What is the term for the breaking down of rocks on Earth's surface?
A) Weathering
B) Erosion
Weathering
What is the hottest layer of the earth?
Your choices are: Crust, Mantle, Outer core, Inner core
Inner core
Which type of plate boundary causes mountains to form?
Your choices are: Divergent boundary or Convergent boundary
Convergent boundary
This type of rock forms under heat and pressure but does not melt.
Metamorphic Rock
Which period is known for the increase of life forms, including the first animals with shells?
Cambrian
What happens when tectonic plates slide past each other?
A) A mountain forms
B) A transform boundary forms
B) A transform boundary forms
Which layer is responsible for Earth's magnetic field?
Your choices are: Crust, Mantle, Outer core, Inner core
Outer core
What do we call the process where one plate sinks beneath another at a convergent boundary?
Subduction
For an igneous rock to become a sedimentary rock, it must go through these three processes first.
Weathering, erosion, and deposition.
Which of the following best describes life during the Late Pre-Cambrian Era?
A)Life was complex and included many multicellular organisms.
B)Life was simple, mostly microscopic, and consisted of single-celled organisms.
C) The earth was dominated by dinosaurs
B) Life was simple, mostly microscopic, and consisted of single-celled organisms.
What natural event can create valleys and mountains over time?
A) The tectonic plates moving
B) Weathering
C) Erosion
A) The tectonic plates moving