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Where do convection currents occur in the Earth that moves the plates around?
Mantle
A rock layer contains fossils of fish, while the layer above it contains fossils of amphibians. What does this suggest?
Fish lived earlier than amphibians.
Which layers show that organisms were not present?
A & E
Which layer is the youngest?
F
Which rock layers are younger than layer C? Name all of the layers.
A & B
Which rock layers are older than rock layer B? Name all of the layers.
C & D
What did the Continental Drift Theory suggest?
All of the continents were once connected/continents drifted apart to their current positions.
What would happen to your WEIGHT if you visited a smaller planet like Mercury?
Weight would change/decrease
What would happen to your MASS if you visit Jupiter.
Mass would not change
Suppose you were an Astronaut that has a mass of 80 kg and a weight of 154 lbs on Earth. You travel to the moon and noticed something different. What changed?
 
Your mass stays the same but your weight has changed
 
Your weight stays the same but your mass has changed
 
Both your mass and weight have changed
 
Both your mass and weight stayed the same
Gravity is strongest when
 
Close together and large
 
Far apart and small
 
Close together and small
 
Far apart and large
Why did the Science community reject Alfred Wegener's Continental Drift Theory?
He did not have a way to prove how the continents moved.
Who came up with the Continental Drift Theory
Alfred Wegener
What occurs in the ocean floor that creates new rocks? What's that process called?
Seafloor Spreading or Mid-Ocean Ridge
Name 2 pieces of evidence that supported Wegener's theory of Continental Drift.
Fossils, Glacial Striations/Climate Clues, Similar Rock Layers/Identical Mountains, or Puzzle-Like Fit
Which object pair has a stronger gravitational pull? Why?
A, because they are closer together
Which object pair has a weaker gravitational pull? Why?
B, because they are further
Which object pair has weaker gravitational strength? Why?
A, because they are smaller/have less mass
Which object pair demonstrates greater gravitational strength?
B, because they are larger/have more mass
Convection currents occur where in the Earth?
Mantle
What two factors affect gravitational strength?
Mass and distance
How would an object increase gravitational strength? Looking for two things.
Increase mass and decrease distance
The Earth's surface is made up of more than 2/3 of what?
Water
Which object has a stronger gravitational pull on the Earth?
Object 1
Which object has a stronger gravitational pull on the Earth?
Object 1
In sedimentary rock layers, how do we know which fossil is the oldest?
It's at the bottom.
In sedimentary rock layers, how do we know which fossil is the youngest?
It's at the top.
Which fossil is the youngest?
Mammoth
Which fossil is the oldest?
Trilobite
Seafloor Spreading supports what theory?
Plate Tectonics Theory
Fossils support what theory?
Continental Drift Theory
Why are fossils great evidence of Continental Drift?
Because the same fossils are found in different Continents.
Why does an object weigh less on the Moon than on Earth?
The Earth has more mass than the moon
What keeps satellites in orbit around Earth?
Gravity
What would happen to the gravitational strength as mass increases?
Gravitational strength increases
What would happen if two objects were to be further apart? What would happen to their gravitational pull?
The force of gravity weakens with increased distance
If a fossil is found in the topmost layer of rock, what does that indicate about its age?
It is the youngest fossil in the rock formation
Why don’t asteroids fall into the Sun?
Gravity keeps them in orbit
What can scientists learn from fossils of tropical plants found in Antarctica?
Antarctica was once a warm continent
Evidence of __________ spreading shows that new crust is forming and plates are moving apart.
Seafloor
What drives the movement of tectonic plates?
Convection currents in the mantle
What is one way fossils provide evidence for Continental Drift Theory?
Fossils of the same species are found on continents now far apart
What's the name of the Supercontinent that Alfred Wegener put together?
Pangaea
What happens to gravitational pull if the distance between two objects doubles?
It decreases
What force keeps planets orbiting the Sun?
Gravity
Why does Jupiter have stronger gravitational pull than Mercury?
Jupiter is larger in size
Where is the asteroid belt located?
Between Mars and Jupiter
What are asteroids mostly made of what material?
Rock
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