1 Joe wants to put a large sum of money into a bag and carry it to the bank.what kind of material made of?why?

Question

3 more questions(who answers all question will be choosed as best answer)

2. Auntie Minah does not want people to look into her windows. she also does not want her house to be too dark. what kind of material made of? why?

3. mr baker wants to display some cakes and bread for sale. what kind of material should the display case made of?why?

4. Light travels in______lines. we cannt see through an opaque object because_______cannot pass through it. whe we put an __________ object between a light source and a wall, a________is formed on it.

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you know why i don know how to answer? because my way to answer the children is wrong.....

Answer 1

I believe that all of these questions are related to the property of opaqueness.

Every object has a degree of opaqueness which is a measure of how much of the light energy passes through an object.

And, of course, in some cases, no light passes through.