Motion
Forces
Friction/Gravity
Energy Basics
Forms of Energy
100
What is the difference between speed and velocity. Give an example of each.
Velocity is speed with direction included.
100
What is a force?
A push or pull
100
What is friction?
The force that two surfaces exert on each other when they rub against each other.
100
How is energy like the sand in an hour glass?
Energy can't be created or destroyed just like the sand in the hour glass.
100
Energy that is stored is called:
What is Potential Energy
200
What law of motion explains why the tissue box in my room isn't sliding around all the time?
Newton's first law of motion
200
What type of force causes movement?
Unbalanced forces
200
What is one way you can reduce friction?
Change the surfaces involved, decrease the force between those surfaces.
200
What is the Law of Conservation of Energy? Why is it important to life?
Energy can't be created or destroyed, but it can be transformed into other usable forms.
200
What 2 factors increase potential energy?
Height and mass
300
What is the mathematical equation that represents Newton's 2nd law?
Force= Mass* Acceleration
300
What unit is force measured in?
Newtons
300
What are the 4 types of friction we've discussed. Give an example of one of them.
Static, rolling, sliding, and fluid friction
300
Provide an example of potential energy being transformed into kinetic energy.
Snow at the top of the mountain turning into an avalanche.
300
Give an example of chemical energy in your life
Answers will vary
400
What is inertia? How does inertia relate to motion?
An object's resistance to change. Things will continue doing what they've been doing.
400
What is Newton's second law of motion and how does it relate to force?
F=m*a the more mass or the greater the acceleration an object has, the greater the force
400
What is one factor that increases the amount of gravitational force?
mass and distance.
400
What is energy? What does the word energy refer to?
Energy is the ability to do work or cause change. It is the mover of substance and matter in the universe.
400
Explain why light energy from the sun is so essential to life
Radiant energy is used by plants to produce food which makes up all food chains.
500
Explain how kicking a soccer ball is an example of Newton's 3rd law of motion
For every action there is an opposite and equal reaction.
500
How can you determine how much force is acting upon an object when the forces are pushing or pulling in opposite directions?
You subtract the force arrows and the direction that is stronger is where the object will go.
500
What is the difference between mass and weight?
Mass is the amount of matter in an object. Weight is the measure of how much gravity is working on an object.
500
Explain what an energy transformation is. Give an example of energy tranformation
The transformation from one form to another. Chemical energy to heat energy to mechanical energy in a car.
500
Give an example of how two forms of energy work together.
Answers will vary.
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