forms of energy
What is energy?
Energy is the ability to cause motion or create change.
What produces sound?
Sound is produced by vibrating objects.
What is light energy?
Light energy is the energy that makes things visible.
What is heat?
Heat is a form of energy that causes temperature changes.
What is a conductor?
A conductor is a material that conducts heat well.
Name three forms of energy.
Light, heat, sound, electrical, and the energy of motion.
What does pitch depend on?
Pitch depends on how fast or slow an object vibrates.
Name a source of light energy.
The sun or a light bulb.
How does heat move?
Heat moves from hot objects to cold objects.
Give an example of a good conductor.
Copper or aluminum.
What type of energy is produced by moving objects?
The energy of motion (mechanical energy).
Give an example of a high-pitched sound.
A whistle or a bird chirping.
What happens to light when it hits a mirror?
It reflects off the mirror.
What is conduction?
Conduction is the transfer of heat through direct contact.
What is an insulator?
An insulator is a material that does not conduct heat well.
How can electrical energy be transformed?
Electrical energy can be transformed into light, heat, or sound energy.
How does the volume of a sound change?
The volume changes based on the strength of the vibrations.
How can light be used to create heat?
Light energy can be absorbed by materials, warming them up.
What happens to ice when it is placed in a warm room?
The ice melts because heat flows from the warm air to the cold ice.
Name an example of a good insulator.
Rubber or wood.
What is the energy called that comes from the sun?
Solar energy.
What happens to sound in water compared to air?
Sound travels faster in water than in air.
What is refraction?
Refraction is the bending of light as it passes through different materials.
Why does metal feel colder than wood at the same temperature?
Metal conducts heat better than wood, drawing heat away from our skin.
Why do we use insulators in electrical wiring?
Insulators help prevent electrical currents from escaping and protect us from electric shocks.