Electricity
The path along which electrical current flows is called a __________________
Circuit
Dolphins communicate sounds and vibrations. This is an example of energy being transferred from one dolphin to the other through ________________
Sound waves
Aluminum is an excellent thermal _______________ because it transfers heat easily.
Conductor
Sound waves cannot travel through _______________
Empty space
or
Outer space
What materials do you need to make a circuit complete with a light bulb?
Wires, voltage source/battery, light bulb
______________ travels in a straight path.
Light
How does heat travel from the Sun to Earth?
Radiation
How does the sound of a guitar travel to reach your ears?
Sound waves
What does a switch do in a circuit?
Opens (disconnects) or closes (connects) the circuit
outward in all directions
Name the three types of thermal energy.
Radiation
Conduction
Convection
Why isn't sound heard in space?
There are few particles
OR
It is a vacuum
In an electromagnet the battery with the ___________ stored energy will produce more electric current and make the electromagnet ______________.
higher, stronger
______________ travels in waves
Sound
______________________ is another name for potential energy
Stored energy
A pom-pom launcher transforms ____________ to ____________
Potential (stored) energy to kinetic energy (energy of motion)
How can you make an electromagnet stronger?
Add more loops to the coil
How are sound waves and states of matter (solid, liquid gas) related?
Sounds waves can travel through all three states of matter
Kinetic energy
Why do your ears hurt after listening to very loud music?