Muscular Force
What is muscular force?
The force created through the use of muscles.
What is friction?
The force that acts on objects that rub against each other.
What is gravity?
Gravity is a force that pulls objects toward the Earth.
What objects do magnets stick to?
Metal objects made of iron, nickel, cobalt, and steel.
True or False: We could still move without muscles
False
What type of friction does a plastic slide have? High or low?
Low friction
Name one way gravity helps us in everyday life.
It helps us walk, keep things in place (instead of floating around), etc..
Name one thing that happens because of static electricity?
Name two activities that require muscular force
Lifting weights, jumping, running, etc
True or False: Friction can slow things down or stop them.
True
True or False: a feather would fall to the ground faster than a textbook
False
What happens when you put a north pole and a south pole of a magnet together?
They attract
Name two muscles in your arms.
Biceps and triceps.
Why is it harder to walk on ice than on grass?
Ice has less friction, so it is slippery.
If you drop a rock and a leaf at the same time, which one will hit the ground first? Why?
The rock, because the leaf is lighter, and the force on the rock would be larger.
What will happen if you bring two magnets together with their north poles facing each other?
They will repel.
Which muscles help you kick a soccer ball?
Leg muscles - quadriceps, hamstrings, and calves
What happens when you rub your hands together quickly?
They get warm because of friction.
What would happen if there was no gravity on Earth?
Everything would float, people can't walk, and objects wouldn't stay on the ground.
You take off your sweater and hear crackling sounds. Then, your hair starts sticking up. What force is causing this?
Static force