Energy
What is energy?
What is motion?
Motion is when something is actually moving or changing.
What is gravity
An invisible force that pulls objects with weight towards each other.
How many laws of motion does Isacc Newton have?
3 Laws of Motion
Which object has more friction? Ice or sandpaper
Sandpaper has more friction
What are the two main types of energy we have talked about?
Potential and Kinetic
What are the three types of motion?
Straight, back and forth, and circular motion
We compare gravity to a....
Magnet
Who is Newton? What is his first name and what is he known for?
Isaac Newton and he is known for discovering everything we know about motion and gravity.
What is a force?
A push or pull to make things start or stop
What is kinetic energy? Give me an example?
Kinetic energy is when something is in motion.
Example: a ball rolling, a car driving
T or F- you can have motion without energy
False
Do larger objects have more gravity than smaller objects?
Yes. Objects with more mass have a stronger gravitational pull (Think about our drop tests)
What is Newtons first law of motion?
Objects stay the same unless something else makes them change.
Why do brakes stop a bicycle or car?
Brakes create friction that slows the wheels.
What type of energy is stored in food?
Chemical energy
What happens when you kick a soccer ball?
The force from your foot makes the ball move
If you drop a feather and a rock at the same time on Earth, which hits the ground first?
Usually the rock, because air resistance slows the feather.
What is Newtons second law of motion?
The harder you push or pull, the faster something moves.
What happens if there is very little friction on the road?
Cars can slide or skid more easily.
What energy is stored when an object is not moving but can move.
Potential energy
Give me two examples of back and forth motion
a swing moving
a door opening/ closing
a yoyo
Is gravity stronger on the Moon or on Earth?
Earth has stronger gravity than the Moon.
What is Newtons third law of motion?
For every action there is an equal and opposite reaction.
Why does the Moon not fall into Earth even though gravity pulls on it?
The Moon is moving forward while gravity pulls it, so it keeps orbiting Earth instead of falling straight down.