Energy
Suppose you throw a ball high into the air and then it falls to the ground. Describe where the ball has the greatest kinetic energy.
When it is falling.
Give three examples of how you use electricity.
Teacher discretion- possible answers: lights, computer, flashlight, phone, car, hoverboard, etc.
Most of Earth's energy comes from ____
What type of energy do you give a jump rope when you twirl it?
kinetic energy
Suppose you throw a ball high into the air and then it falls to the ground. Describe where the ball has the greatest potential energy.
At the top, right before it starts falling back down.
Is aluminum foil an electrical conductor or insulator?
Conductor
The bouncing of light rays off an object is called___
reflection
Give an example of a thermal insulator.
wool, rubber, plastic, wood
Conductors (wrong answers): metals/glass
Elastic potential energy can be found in____
A. rocks
B. concrete floors
C. stretched rubber bands
D. bowling balls
The energy an object has because of its place or its condition.
Lightning and the spark you may see when you touch a doorknob on a dry day are both caused by _____
static electricity
The bending of light waves by an object is ____
refraction
If your grab the hot handle of a pot on a stove, you will experience ____
a. radiation
b. convection
c. conduction
d. insulation
conduction
Which of the following is NOT an example of a release of chemical energy?
a. bouncing ball
b. using batteries
c. burning wood
d. digesting food
bouncing ball
The energy of motion or energy in use.
Kinetic Energy
Tell me two ways that electricity is made.
-burning fossil fuels (gas, coal, propane)
- water power
- wind power
- solar power
-geothermal
reflects/does not absorb
The average kinetic energy of all the molecules in an object is the object's ______
temperature
Can sound travel in space?
No, it has to have matter to travel through.
Name 3 types of energy.
thermal, mechanical, light, sound, elastic potential, gravitational potential, chemical
Metals and other materials that transfer heat and electricity easily are called _______
conductors
Name something that is opaque, translucent, and transparent.
Teacher discretion- possible answers:
opaque: wood, desk, door, book
translucent: paper, colored glass, balloons, flag
transparent: clear glass, window, sheet protector
Name two ways thermal energy can be transferred.
conduction, convection, radiation
The law of conservation of energy states____