Share LIGHT, HEAT AND SOUND ENERGIES
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When bodies of matter are heated, they … . 1. get smaller 2. expand 3. freeze 4. contract
2.- Expand
Which of the following sentences is not true? 1. Light travels very fast. 2. Light travels in straight lines. 3. Light can pass through any material. 4. The sun is a natural light source.
3.- Light can pass through any material.
What do thermal insulators do?
They stop heat from passing.
… materials do not let light pass through.
OPAQUE
Lenses … light to make things look bigger or smaller.
Refract
The … of a sound is how loud or quiet it is
VOLUME
Choose the odd one out. 1. Transparent 2. Opaque 3. Translucent 4. Convergent
4.- CONVERGENT
Choose the odd one out. 1. Expansion 2. Volume 3. Timbre 4. Pitch
1.- EXPANSION
When we say "refraction", we are talking about...
LIGHT ENERGY
This body let light pass through it, but it disperses it. It is called...
TRANSLUCENT.
Sound energy travels quicker than light energy. True or false?
FALSE
The pitch of a big dog is...
LOW
In refraction, light is ...
divided in rays.
What is timbre?
It is the difference of sounds with the same volume and pitch.
According to the pitch, a sound can be....
HIGH AND LOW
When we say a sound is quiet, we are talking about its.....
VOLUME
