Types of Energy
Energy cannot be created or destroyed just transformed from one type to another.
What 2 energy transformations are happening: The sun making the concrete hot.
Solar or Radiant energy to thermal energy.
A contact force is:
Physical contact with an object or thing.
A Force is:
A push or a pull.
What is net force?
The sum or total of all forces on an object.
What is the energy from the sun called?
Solar or Radiant Energy (Radiation)
What is the energy transformation in photosynthesis?
Radiant energy from the sun to chemical energy in the plants.
What is mass?
Anything that has matter and takes up space.
An unbalanced force cause:
Movement or motion
When the net force is zero, the forces are balanced or unbalanced?
Balanced
Energy of motion is......
Kinetic energy
What is the energy transformation in a microwave oven? (List 3 or 4)
Electrical to radiant (radiation) to light and heat
A non-contact force generated from moving charges:
Magnetic force
An unbalanced force causes a change in ___________ and __________.
speed
direction
If I push an object with 10N of force and my friend pushes the same object towards me with 20N of force, what is the net force?
10N because the forces are going in opposite directions.
Stored energy is.......
Potential energy
What is the energy transformation in a flashlight? (List 3)
Chemical to electrical to light
A non-contact force that exists between objects with mass.
Gravity
What type of force slows down an object?
friction
If the forces are going in the same direction you ________ the forces. If the forces are going in different directions, you ___________ the forces.
add
subtract
The energy in a battery is________
Chemical energy
The ability to do work is called:
Energy
As mass increases, what happens to gravitational force?
It also increases.
Explain how we determine the direction of the unbalanced force:
It goes in the direction of the bigger force (larger number).
What is the unit of measurement for force?
Newton (N)