Gravity
Force
Simple Machines
Toys on Earth and in Space
Newton's Law
100
Where is there no gravity?
Space
100
What is the definition of force?
A push or pull on something. Force is needed to change the motion of objects.
100
What is a simple machine?
A simple machine is the basic element of a complex machine. Simple machines do not have many parts.
100
In class we experimented with toys on Earth and in space. How did the paper airplane move on Earth?
The paper airplane flew in the air and eventually fell to the ground.
100
What did Isaac Newton discover?
He discovered gravity and the laws of motion.
200
What is the definition of gravity?
Gravity is the force that pulls all objects towards the Earth.
200
What is the definition of push?
A force that moves something away from the force. For example, you have to _________ a shopping cart for it to move.
200
In the book "How Do You Lift A Lion", why can't the characters lift the lion without a simple machine?
The lion is very heavy, so gravity is pulling down on the lion because of its weight.
200
How did the paper airplane move in space?
The paper airplane soared farther in space than on Earth. It did not fall to the ground.
200
What is the first part of Newton's 1st law of motion?
An object at rest remains at rest unless acted on by another force.
300
If you throw a ball in the air, what will happen and why?
The ball will go up in the air and then it will come back down to the ground. This is because of the force of gravity.
300
What is the definition of pull?
A force that moves something toward the force. For example, I have to _________ open my drawer.
300
Give an example of a simple machine.
Examples: lever, wheel, pulley
300
When the astronaut dropped the ball and jacks in the space shuttle, how did the ball and jacks move?
The jacks drift apart.
300
Give an example of the first part of Newton's 1st Law of Motion.
Example: A baseball player picks up a baseball and throws it to his teammate.
400
If an object is heavier in weight, does it have more of a gravitational pull towards Earth?
Yes
400
If you roll a tennis ball on the floor, what is the force?
The push of your hand on the ball
400
Describe the simple machine that the characters in the story "How Do You Lift A Lion" used to lift the lion.
The characters use a long lever to lift the lion.
400
Explain what happened when you used the magnetic marbles to create a chain on Earth.
I started with 1 marble and then added more marbles to it to create a chain. The marbles attracted each other and stuck together. Eventually, the chain broke once there were too many marbles on the chain.
400
What is the 2nd half of Newton's 1st law of motion?
An object in motion in a straight line tends to stay in motion in a straight line unless acted upon by another force.
500
What did the ball and jacks do in the space shuttle when the astronaut dropped them in the air?
They did not fall to the ground. They moved in different directions in the air.
500
Name 2 kinds of forces (other than push and pull).
Example: friction and gravity
500
Give an example of a complex machine.
Examples: car, laptop computer, airplane, bulldozer
500
What happened with the flip toy in space?
The flip toy continued to flip in a straight line as it moved across the space shuttle.
500
Give an example of the 2nd half of Newton's 1st Law of Motion.
Example: If you roll a marble on the floor, it will eventually stop because of friction. The marble may also move because of a bump in the floor. Example: The activity we did in class using a track, marble, and metric rulers.
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