Show:
Simple Machines
Gravity
Forces
Mystery Questions #1
More on Forces,Motion, and Simple Machines
100
This makes work easier for us and changes the amount of force needed to do certain kinds of work.
What is a Simple Machine?
100
____________ is the Earth’s pull on things. What is this?
What is gravity?
100
_________ is a push or a pull.
What are forces?
100
How do you know how much force the wind has? A. by the size of the objects it moves B. by taking a deep breath and smelling it C. by looking at a house D. by seeing how much rain it brings
What is A?
100
Who is the scientist that developed the laws of motion? A: Albert Einstein B: Stephen Hawking C: Galileo Galilee D: Isaac Newton
Who is Isaac Newton?
200
This makes moving and lifting things easier. It is a flat, slanted surface that works like a ramp.
What is an Inclined Plane?
200
What type of force is gravity?
What is a pull?
200
If the same force is applied to each of the following objects, which will have the greatest acceleration? A. shopping cart B. sofa C. desk D.chair
What is a shopping cart?
200
What will happen when a light-weight object and a heavy object run into each other? A. They bounce away equally. B. The small object bounces backwards. C. The large object bounces backwards. D. The small object becomes part of the large one.
What is B?
200
How do we change the direction of a moving object?
What is applying a force to its side?
300
This is a pair of inclined planes attached back-to-back. It is used to force things apart.
What is wedge?
300
If the Moon was closer to the Earth the force between them would: A. Get smaller B. Disappear C. Stay the same D. Get bigger
What is Get Bigger?
300
An object at rest will stay at rest unless what?
What is applying a force upon it?
300

When two forces are the same strength but act in opposite directions. For example, a game of tug-of-war where the rope does not move. 

_____________ forces

300
What will happen if you drop a penny and a tennis ball from the top of a building? Which will hit the ground first?
They will hit the ground at the same time.
400
This is a bar that pivots or turns on a fixed point. The fixed point is called the fulcrum.
What is Lever?
400
To get away from earth, a rocket needs to use what force against gravity?
What is a push?
400
Which is NOT a force? A. Gravity B. Push C. Pull D. Mass
What is a mass?
400

______forces change the motion of an object. For example, when someone kicks a ball. 

What is: 

A. Balanced Forces

B. Unbalanced Forces

C. Friction

400

How can we get a moving object to stop?

By applying force in the opposite direction of the moving object.

500
This is a wheel that is used with a cord or rope. When you pull it downward, the other end lifts upward.
What is a pulley?
500
Which of these will feel the biggest gravitational pull on Earth? A. A 1000kg elephant B. A 100g mouse C. A 100kg rugby player D. A 10kg Bicycle
What is a 1000kg elephant?
500
The force that pulls things towards the Earth is called?
What is gravity?
500
This is made up of a wheel with a rod attached to it. When the wheel is turned, it turns the axle with it.
What is wheel and a axle?
500

These machines were inspired by a cartoonist who used to draw elaborate contraptions. Although the cartoonist never created one in real life, his name is now used to describe this kind of machine. It uses multiple simple machines and chain reactions to complete a simple task, like turning on a light switch. 

What is a Rube Goldberg machine.