Which of the following objects would have the most kinetic energy when moving at the same speed? (A) A small ball, (B) A large ball, (C) A small car, (D) A large car.
A large car
a) Kinetic energy
b) Thermal energy
c) Nuclear energy
d) Light energy
a
what type of energy is released by luminous objects?
light energy
true
What is the Law of Conservation of Energy?
Energy can neither be created nor destroyed; it can only be converted from one form to another.
If the speed of an object is doubled, what happens to its kinetic energy? (A) It doubles, (B) It quadruples, (C) It remains the same, (D) It halves.
It quadruples
a) Kinetic energy
b) Potential energy
c) Thermal energy
d) Chemical energy
b
what energy is stored in food, fuel and batteries?
chemical energy
convection
True or False: A ball thrown in the air loses potential energy as it rises and gains kinetic energy as it falls.
a object moving has _______?
kinetic energy
a) Nuclear energy
b) Thermal energy
c) Potential energy
d) Light energy
c
what energy is stored in an object that is higher than the ground?
gravitational potential energy
warming your hands with the sun
Give an example of energy being converted from one form to another.
A flashlight converts chemical energy from the batteries to electrical energy, which is then converted to light and heat energy.
the kinetic energy store of a moving object depends on its______ and _____?
mass,velocity
a) Continuous kinetic energy
b) Constant potential energy
c) Transformation between potential and kinetic energy
d) Only potential energy
what energy is stored in objects that are moving?
kintetic energy
Metal is a good conductor of heat. Why?
Because it allows heat to transfer quickly through its atoms.
What type of energy does a stretched rubber band have?
potential energy
a car that is moving has ____ _____?
kinetic energy
a) Kinetic energy
b) Potential energy
c) Thermal energy
d) Chemical energy
b
what energy is stored in objects that have been stretched?
radiation
True or False: In a closed system, the total amount of energy can change.
false