Energy I
________________ is a measure of the amount of matter in an object.
Mass
________________ is the rate at which work is done.
Power
What has more kinetic energy:
1. An airplane traveling at 50 mph
2. A bird flying at 50 mph
An airplane traveling at 50 mph
What has more gravitational potential energy?
1. A woman standing on the 5th story balcony
2. A woman standing on the 20th story balcony
A woman standing on the 20th story balcony
The region in the center of an atom is called the _____________
nucleus
A _____________ is a push or pull.
force
The two basic types of energy are:
1.
2.
1. Potential
2. Kinetic
Kinetic Energy= 1/2 X mass X speed2
What has a greater effect on an object's kinetic energy- mass or speed- and why?
Speed because it is squared in the kinetic energy equation.
Energy of objects that can be compressed or stretched ...
Elastic Potential Energy
The type of potential energy stored in an atom's nucleus. It is released during a nuclear reaction.
Nuclear Energy
The ____________ of an object is the distance the object travels per unit of time.
Speed
The energy an object has due to its motion is called...
Kinetic Energy
Energy resulting from the position or shape of an object.
Potential Energy
The form of energy associated with the motion, position, or shape of an object is called...
*Total amount of energy
-can be all potential, all kinetic, or some of both
Mechanical energy
The nuclear reaction that occurs when a nucleus splits.
-Nuclear power plants use these reactions to generate electricity.
Nuclear fission
______________ is the ability to do work or cause change.
Energy
Two factors that kinetic energy depends on is
1.
2.
1. Speed
2. Mass
Potential energy related to an object's height
Gravitational Potential Energy
A car moving along a highway and a trophy resting on a shelf both have ______________ energy
Mechanical
The nuclear reaction that occurs when the nuclei of atoms join together.
-These nuclear reactions occur constantly in the sun, releasing huge amounts of energy
Nuclear fusion
Energy and work are both measured in _____________.
Joules
What has more kinetic energy:
1. Tennis ball lightly tossed at 10 mph
2. Tennis ball zooming toward you at 40 mph
Tennis ball zooming towards you at 40 mph
Two factors that determine the amount of gravitational potential energy an object has...
1. Weight
2. Height
All objects are made up of particles called ____________
Atoms
The total kinetic energy of the particles in an object is called ______________ energy or heat energy.
Thermal