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Shadow
Silver chloride is light sensitive. Light photons break the salt down into silver metal and chlorine gas. Using a dark bottle protects the salt from the light that would degrade the sample.
i would say use it , but use only the top part , but u should not take chances and just throw it away
The light would decrease. This is because light does not need a median to move throw. The water is a form of median. So it would slow the light down. Sound needs a median to move. This would bethe air for the sound.
Not enough information. The length of the shadow depends on the height of the object AND on the how high the Sun is in the sky.
I would call the number on the back of the bottle or ask a doctor.
Depends on where you are and the tides. If you want to do this check the tide schedule in your area and you want to pick the time when the tide is out so it will carry your bottle out and not onto the shore. If you can get on a boat that may help too.
No you would need some kind of conducter like a lightbulb to create new light like a lightbulb. Light can escape any area.
Throw it.
It says on the bottle it is naturally gluten free
There are light weight inflatable balls that can be used. Heavier balls like basketballs tend to cause injuries. Use an under hand throw or over head throw and avoid hitting anyone in the head. That would be a foul.
bottle