Human Body
These hard structures protect your body and help give it shape.
bones
A mountain that can erupt lava, ash, and gases.
volcano
Energy can make objects do this.
move
Sound is made when something does this.
vibrates or vibrations
This type of energy powers lights, TVs, and computers.
electrical energy
These pull on bones to help your body move.
muscles
The process that breaks rocks into smaller pieces over time.
weathering
A roller coaster at the top of a hill has a lot of this kind of energy because of its height.
stored / potential energy
Sound needs this to travel through
air or water
Name one renewable energy source.
wind, water, or solar energy
The part of the eye that gets bigger in dim light and smaller in bright light.
pupil
his happens when water, wind, ice, or gravity move weathered rock and soil from one place to another.
erosion
When one moving object hits another and causes it to move, energy is being ________.
transferred
True or False: Sound can travel through outer space.
False
When electrical energy powers a light bulb, the electrical energy changes into ______ and ______.
light energy and heat energy
This body part receives messages from your senses and helps control your body’s actions
brain
This type of rock often forms in layers and may contain fossils.
sedimentary
In a chain reaction machine, one event causes another event because energy is being passed from one object to the next. This is called a ________.
chain reaction
A sound with a high pitch has sound waves with a ______ wavelength compared to a low sound.
shorter
Heat moves from an object that is ______ to an object that is ______.
warmer and cooler
Messages travel from your body to your brain and back through these parts of the nervous system.
nerves
This type of rock forms when heat and pressure change an existing rock.
metamorphic
A ball sitting at the top of a hill has stored energy. When it rolls down the hill, that stored energy changes into this kind of energy.
motion energy (kinetic energy)?
Give one way patterns can be used to send information over a distance.
flashing lights, drum beats, tapping patterns, coded sounds, Morse-code style messages.
A city needs electricity but wants less pollution. Which energy sources from your unit would be better choices than coal?
wind, solar, or water