Vocabulary Lesson 1
The ability to do work or to cause change
What is energy
When one object bumps into another object, the action is called
What is a collision
What are two sports that involve energy transfers between objects? Where do the transfers happen?
Answers may vary :)
What is heat?
The transfer of thermal energy from one object to another.
What causes sound energy?
a. heated objects
b. vibrating objects
c. charged particles
d. light energy
B. Vibrating objects
Energy moving from one object to another
What is transferred
The distance an object travels in a particular amount of time
What is speed
How could we tell that the marble had more energy than the ping pong ball and golf ball?
The size of the crater that the marble left behind was larger than the one left by the ping pong ball and golf ball
What type of moving particle has a higher temperature?
A faster moving particle.
Which of the following would you expect to be a thermal conductor?
a. wood
b. plastic
c. paper
d. metal
D. Metal
When energy is changed from one kind of energy to another kind
What is transformed
How would kinetic energy of the dominoes be affected if the first domino did not hit the second one?
The dominoes other than the first would not have kinetic energy if they did not fall
In Newton's cradle, why do the spheres in the center barely move?
Most of the kinetic energy is transferred though them
The squeal of the pig because it has a higher pitch
Lamar plugs a lamp into the wall. Electricity goes from the outlet through the cord, and to the light bulb. Which choice best describes the cord?
A. Resistor
B. Conductor
C. Current
D. Insulator
Energy of a moving object
What is Kinetic Energy
What causes an object that is not moving to gain kinetic energy?
A force causes the object to start moving
What changes in energy occur when a bowling ball strikes the pins?
The bowling ball transfers some kinetic energy to the bowling pins that the ball hits, causing the pins to fall down. Some of the bowling ball's kinetic energy is transformed into sound energy and thermal energy
Why do you think that the inside and the outside of electrical wires are made from different materials?
The electrical wire must allow electric current to flow, but it should only flow in the wire. The outside covering keeps the current in the wire.
What determines the pitch of a sound?
a. the temperature of the source
b. the speed of vibrating particles
c. the size of the sound source
d. the speed of charged particles
B. The speed of vibrating particles
Stored energy in an object at rest
What is potential energy
How do you know that a falling domino that causes another domino to move has energy?
The falling domino caused a change in the domino it hit.
Why do you think vehicle safety engineers test vehicles at different speeds and directions in the test crash investigations?
The results of the crash depend on the speed and direction of the cars. More damage would most likely occur when cars are moving faster because those cars would have more energy
Describe how electric currents flow in circuits.
The battery provides energy that causes the electric current to flow. The wire provides a path for the current.
What energy transformations take place in a race car during a race?
The potential energy of the car changes to kinetic energy. Chemical energy of the gasoline is changed to energy of motion.