Lesson 10 of 14
How much light gets through?
Show on a big screenA bathroom window lets daylight in. You cannot see who stands outside. Why?
Step 1 of 3
- A torch beam meets a clear plastic bag. The screen behind stays bright.
- A thin cotton sheet lets some light through. The screen is dim.
- A floor tile lets none through. The screen shows no patch.
The glass lets light in, but blurs what is outside.
The new words
- Transparent — you see clearly through it.
- Translucent — you see only a blur through it.
- Opaque — you cannot see through it at all.
The rule
An material blocks all the light. A material lets nearly all of it pass. A material lets part of it pass.
things make a dark shadow. things make a faint one.
Now try it. Guess the word first. Then look at the screen.
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Try the lab to finish this lesson.