1. Which ocean has a ring of volcanoes around it? Why are volcanoes present in those locations?
Volcanoes are located around the edges of the Pacific Ocean. This is because of the convergent boundaries (subduction zones) that result in volcanic activity.
2. Where do most major earthquakes occur? Why?
Major earthquakes occur at the plate boundaries because of the plate movement created as a result of convection currents.
3. Explain why it is important to know and be able to locate these geologically active areas?
To be able to save lives by evacuating people from such locations, To make sure that the construction of buildings in such areas can withstand the destructive forces of earthquakes.
4. Why is the west coast of the United States susceptible to earthquakes? Explain your answer.
There are both transform plate boundaries and convergent plate boundaries on the west coast. Earthquakes are commonly associated with these types of plate boundaries.
5. Explain why earthquakes and volcanoes tend to occur on plate boundaries.
slow movement of the plates that cause them to converge, diverge or slide past each other, releasing stress, causing volcanoes and earthquakes to occur.
6. Based on your experiences with this activity, what kind of change would you expect to see on the world
map as tectonic activity continues?
Earthquakes and volcanoes will continue to occur, building and destroying land masses and shifting major bodies of land.
kick off: In your journal, write down and answer the following question:
How does friction affect our daily lives?
1. Discuss Shoe Drag activity
What is happening to the shoe before it begins to move?
It is experiencing static friction between it and the floor. Static friction is the force which keeps a motionless object from being pushed or pulled across a surface.
Why is the rubber band not stretched as far once the shoe begins to move?
Once the shoe starts moving, the rubber band is not stretched as far as when the shoe was sitting still because when the shoe was sitting still, it had to overcome the static friction, as well as inertia, to get going. Once the shoe was going, it experiences kinetic friction. Kinetic friction acts to resist the motion of an object sliding across a surface.
Why is there less friction to resist its movement once the shoe starts moving?
Kinetic friction is less than static friction, if everything else stays the same.
What happened to the shoe when the rocks were added?
When rocks were added, the increased mass increased inertia. The aluminum foil and sandpaper also had different effects on the amount of friction that was present.
What has an impact on the amount of friction in a system?
The kind of material, weight, roughness and lubricants can all have an impact on the amount of friction in a system.
Newton's first law of motion is often stated as:
"An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force."
2. Which of the following examples show how Newton’s First Law of Motion occurs in everyday life?
A car suddenly stops and you strain against the seat belt.
While riding a skateboard, you fly forward off the board when hitting a curb, a rock, or another object, which abruptly halts the motion of the skateboard.
A magician pulls the tablecloth out from under a table full of dishes and they don’t fall off the table.
The car turns left and you lean or slide to the right side of the car.
3. Demos: paper and ball drop, water spin, ultimate frisbee
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