Light
How many natural light sources are there?
five
When we rubbed the balloon on our head YESTERDAY, why wouldn't it stick to the walls?
The humidity was high. When it is high, there is less static. (The water in the air helps balance the charged particles.)
What are the two poles of a magnet called?
North and South
What does translucent mean? Give an example.
-some light goes through
-honey, oil
How can you protect your sight from dangerous light?
-eclipse glasses
-welding helmet
-good sunglasses
What do we call animals that give light?
Bioluminescence
Give one reason why someone might NOT be able to charge their balloon, when others could.
-short hair
-head is covered
-what about wet hair??
What happens when North and South poles touch?
They attract.
What is a way to deal with static in agriculture? What does this prevent?
-combine had disc attachment in the ground
-prevents sparks/fire and dust on windshield
What does transparent mean? Give and example in the room.
-clear, see-through
-window
Light moves in ___ ___ ___ ___ ____. (This is why we have shadows).
waves
If the balloon has a lot of negative charge and the wall is positive, what happens?
It sticks!
Explain repelling.
When two poles are the same, they push apart.
What colors are in light? How can you prove it with a prism?
-a rainbow of color is inside
-the prism splits the light and shows all the colors
What is a benefit of getting sunlight?
-makes vitamin D
-helps your sleep patterns
-more
Show the shadow we expect on the board.
(draw it)
What charge is in the bottom of a storm cloud?
negative
If I want to pick up more paperclips with my magnet, how might I do that?
-move it closer
-is anything blocking it?
-can I strengthen the charge?
If you see a blue shirt, it means that all the blue light is being________________?
reflected
What are dangers of sunlight?
-sunburns /pain
-skin cancer
-
What happens when we put light through water? Does it reflect, refract or absorb.
refract (bends)
How does lightning work?
Negative charges in the bottom of clouds and positive charges on the ground (like trees) attract. Zap!
Tell some items that must be kept away from magnets, or they can be damaged.
-credit/debit cards
-computers
Explain how magnets can be a contact or non-contact force.
They can cause a force if they touch or if they are close, such as through a desk or paper.
Name 5 uses for magnets at home and work.
-latches
-toys
-more