Chemical Energy
What is the energy transformation in a man running? (_____ to _____)
Chemical to mechanical
What is mechanical energy?
Energy of motion/ movement
What is transferred in waves?
ENERGY
True or False: Stored energy is kinetic energy
FALSE. That's potential
What is gravitational potential energy?
When an object is at rest and has the stored or potential energy to go DOWN.
Describe the energy transformation in a battery powered flashlight?
Chemical to electrical to light
What is thermal energy?
Which wave moves in an up and down motion?
transverse
false, the bat behind you waiting to swing is potential energy.
Free space/ points:)
You're welcome :)
What type of energy is food inside your body?
chemical energy
Give an example of an object that uses chemical to electrical to sound energy?
example: speaker
Which wave moves in a back and forth motion?
Longitudinal
Name one example of potential energy and one example of kinetic energy.
potential: rollercoaster at the top of a hill, book about to fall off a desk, apple that can fall off a tree.
kinetic: bike moving, car moving, baseball that's been thrown
Describe the transformation of energy in a dishwasher?
Electrical (plugged in) to thermal (gets hot) to sound (we can hear it)
Light/ radiant energy to chemical energy
Give an example of an object that starts with electrical energy but ends with thermal energy?
ex: lamp, heated blanket
Can energy be transferred in longitudinal or transverse waves? or Both?
BOTH!
A rollercoaster at six flags has a huge drop. Where is the potential energy the highest?
At the top when they are waiting to go down
Describe the transformation of energy in a tea kettle on a natural gas stove?
Chemical to thermal to sound!
Which action represents a conversion of chemical energy into mechanical energy?
A. A Zebra jumping from a Lion
B. Spaghetti reheated in a microwave
C Sunlight Melting a popsicle
D Ramen boiling on a stove
A
teacher rubbed a match against a piece of sandpaper. The match started to burn. Which statement best describes the energy changes that occurred?
chemical to light to thermal
What are compressions and rarefactions in a Longitudinal wave?
Compressions are when particles in the wave are super close together, rarefactions are when they are spread out.
A girl on a bicycle is going down a hill. Is her kinetic or potential energy increasing? Which is decreasing?
kinetic (motion) is increasing, potential (stored) is decreasing
Describe the energy transformation that happens after the circuit is closed and the lightbulb turns on AND explain if any energy is lost or gained during the transformation.
Chemical to electrical to light
Energy is transformed, never created or destroyed.