Energy Basics
What is energy?
The ability to cause things to move, change, or happen.
What type of energy is produced by vibrations?
Sound energy
What happens during an energy transfer?
Energy moves from one object or system to another
What would happen if a metal plate with beans was placed on top of a speaker?
The beans would move from the sound vibrations from the speaker.
What is evidence?
Information or observations that help support an idea or explanation.
True or False:
A moving object always has energy.
True
What type of energy is carried by an electric current?
Electrical energy
Complete the pathway:
Electrical energy--> _______ energy--> Motion energy
Sound energy
What is the meaning of system?
A group of parts and functions that work together.
The beans do not move when the speaker is OFF, but they move when the speaker is ON. What is this evidence of?
Energy is being transferred.
What does motion mean?
Something is moving.
What type of energy is associated with something moving?
A speaker uses electrical energy to produce sound. What happens to the energy?
Electrical energy changes/ transfers into sound energy.
How does energy transfer to most of the applicances in the kitchen?
Electric current
Why would scientists compare what happens when the speaker is ON and OFF?
Give one clue that an object has energy.
It may move, make a sound, cause another object to move, or change something around it.
A phone is plugged into a charger. What type of energy is transferred to the phone?
Electrical energy
A radio is playing music. What kind of energy transfer allows your to hear the music?
Energy is transferred through sound.
What does vibration mean?
A quick back and forth movement
In the buzzer investigation, when does the buzzer make a sound?
When the circuit is connected correctly
A student sees a toy car moving across the floor. What does this tell the student about the car?
The car has energy because it is moving.
Name three forms of energy we have studied.
Electrical, sound, and motion energy
Explain what this pathway means:
Electrical energy--> Sound energy--> Motion energy
Electrical energy powers the speaker, the speaker produces sound vibrations, and those vibrations can cause another object to move.
True or False:
Can vibrations travel from a speaker to liquid?
True
Why would a scientist test the speaker before and after plugging it in?
To observe whether electrical energy is needed to make the beans move.