Vocabulary
Ability to do work
energy
Energy that is the sum of potential and kinetic energy
mechanical
energy that is stored in objects that are stretched or compressed
elastic
An object is in motion if
a. its position changes relative to its surroundings
b. energy is applied to the object
c. a force is applied to it.
d. it loses energy.
A. its position changes relative to its surroundings
In the process of fusion, nuclear energy is
a. absorbed when a nucleus splits
b. released when a nucleus splits
c. released when nuclei join
d. absorbed when nuclei switch places
c. released when nuclei join
energy that is stored up, just waiting to be used
potential
energy that is stored in the nucleus of an atom
nuclear
energy stored in an object because of its high position
gravitational
Which of the following is not a form of energy?
a. light
b. sound
c. air
d. electricity
c. air
An increase in movement of particles in a substance is associated with an increase in ______________ energy.
thermal or kinetic
energy that is in motion
kinetic
energy that is produced by vibrating sound waves
sound
Movement of energy from one object to another.
Energy Transfer
Kinetic energy is the energy of ____________.
a. motion
b. potential
c. gravity
d. distance
a. motion
Chemical energy is a form of ____________ energy.
potential
energy that is produced by the movement of molecules in a substance
thermal
energy that is stored in the bonds of molecules that can be released or absorbed during a chemical reaction
chemical
Energy cannot be created or destroyed.
Law of Conservation of Energy
Gravitational potential energy is affected by the object's weight and the object's_____________.
height
Which of the following is a type of energy that is not involved in the human body's everyday processes?
a. mechanical
b. nuclear
c. thermal
d. chemical
b. nuclear
Energy that travels in electromagnetic waves
light
energy that is produced by the movement of electrons from one atom to another
electrical
The change of energy from one form to another.
Energy Transformation
Explain the energy transformation that must occur for your body to participate in a physical activity, such as playing a sport.
Chemical energy from food transforms into mechanical and thermal energy in the body. Mechanical energy allows motion to happen.
A rubber ball that sits motionless near the edge of a tall bookshelf has no kinetic energy. However, it does have mechanical energy. Explain why that is possible.
Mechanical energy is the sum of kinetic and potential energy. The ball has potential energy due to its position above the ground. Therefore, it has mechanical energy.