1. Sound and Light

2. EQ: What is sound? Vibration Volume Pitch Frequency
Vocabulary Words
Vibration
Volume
Pitch
Frequency

3. Volume is the loudness of a sound
Vibration
Vibration is the back
and forth movement
of matter.
Volume
Volume is the loudness of a sound

4. Pitch Frequency Frequency is the number of vibrations per second
Pitch is how high or low a sound is
Frequency
Frequency is the number of vibrations per second

5. Sound Energy
Sound is a form of energy that happens when something vibrates. Vibration is a quick back and forth movement of matter.

6. Sound Energy
Sound can be loud or soft. The loudness of a sound is its volume.
soft
loud

7. Sound Energy

8. Sound Waves
Sound travels through the air as ways. When an object vibrates it pushes an object through it.

9. Sound Waves
A sound’s pitch is how high or low it is. Pitch comes from the speed of the vibrations. The number of vibrations per second is the frequency.

10. Sound Transmission Sound waves can carry energy a long distance.
The energy travels to a new place, but the matter that carries it doe not.

11. Animals and Sound
People can hear sounds over a wide rang of frequencies.
But some animals can make and hear sounds of lower frequencies.

12. Animals and Sound
Elephants make low frequency sounds that travel long distances.
Bats make high frequency sounds that help them fly at night.

13. Let’s Review What is sound? Name 4 things that make sound.
What causes some sounds to be louder than others?
What is vibration?
How does sound move through
the air?
What causes echoes?

14. EQ: What is light? reflection refraction translucent transparent
Vocabulary Words
reflection
refraction
translucent
transparent
opaque

15. What is light? These are light waves.
Light is a form of energy that travels in waves. There are different kinds of light waves, We cannot see them though. The energy we see is called visible light.

17. light waves
Light waves move up and down, forming a “S” shape. This kind of waves is called a transverse wave.
light waves
Sound waves

18. reflection
Reflection is the bouncing of light from a surface. Reflected light allows you to see an object.

19. refraction
Refraction is the bending of light as it moves between different kinds of matter.

20. translucent
Materials that allow only part of light that hits them to pass through them are translucent.

21. transparent
Materials that allow most of light that hits them to pass through them are translucent.

22. opaque
Materials that do not allow any part of light to pass through them are opaque.

23. Name that type of object

24. Name that type of object

25. Name that type of object

26. Let’s Review What is light?
What is the difference between reflection and refraction.
Explain translucent, transparent, and opaque. Give examples of each.
The energy we see is called ______
What is the difference between sound waves and light waves?