Energy and Collisions
When a hammer hits a nail, energy changes into heat, sound and
motion
waves transfer..... as they travel
energy
Sound is energy that moves through
vibrations
Waves that move through the ground during an earthquake are called
seismic waves
every message needs a .... and a ....
sender and receiver
A collision happens when two objects
bump into each other
The highest point of a wave is called the
crest
Louder sounds have...... amplitude
greater (larger)
Earthquake waves move the ground
back and forth
computers use only the numbers ..... and ..... to make code
1 and 0
After hammering a nail, it feels warm because energy was changed into
heat
The lowest point of a wave is called the
trough
Soft sounds have ..... energy than loud sounds
less
Most earthquake damage happens from waves that travel along earths
surface
Morse code uses .... and .....
dots and dashes
A fast-moving object transfers more energy during a collision because it has more
motion energy
The distance between two crests or troughs is the
wavelength
Light waves can travel through empty space, but sound waves need
matter
Scientists study seismic waves to learn how .... an earthquake is
strong
cell phones send messages using ..... waves
radio waves
You know energy was transferred in a collision if you can hear sound, see movement, or feel
heat
The height of the wave is called its
amplitude
A jet engine is louder than a whisper because it has more
energy
Seismic waves transfer energy that causes shaking and ....
damage
pictures on screens are made of tiny dots called .....
pixels