The steeper the angle of an inclined plane the __________ the vehicle will move.
Faster
Thinking about our "Working Wheels" project, we learned that as water drops potential energy turns into _________ energy.
Kinetic
What is friction?
The force of resistance which is encountered when two objects rub against each other.
How is potential energy created in a homemade catapult using an elastic band?
As you twist the elastic you are exerting energy. This energy is stored in the twisted elastic.
What are water wheels used for?
Water wheels are used to produce energy.
What is speed?
The measurement of how fast an object moves.
What are 3 ways to reduce friction?
1.Use smooth and hard surfaces.
2. Minimize surface contact.
3. Stabilize moving parts.
4. Reduce tension at moving parts.
5. Use lubricant.
What is potential energy?
Energy which is stored by an object.
A device for doing work in which a force which is applied at one point to overcome a force at another point is called...
A machine!
What are the 2 main points stated in Newton's Second Law of Motion?
The greater the force on an object, the greater its change in speed or direction.
The heavier an object, the less its change in speed or direction.
An object will stay at rest or keep moving unless...
...something interrupts it.
What does this picture show?
Linkage
Thinking about our "Working Wheels" project, we learned that water at a higher level has what kind of energy?
Potential energy
What is an axle?
The shaft at the center of the wheel.
How can a simple crane with a pulley system and a crank make it easier to lift heavy objects?
The pulley system changes the direction of the force to make it more convenient to lift the load.
What is a chassis?
A frame upon which a vehicle is built.
What is an efficient machine?
An efficient machine uses the LEAST amount of energy possible
What kind of energy changes motion/position of an object?
Mechanical Energy
In order for your vehicle or device to move using the least amount of effort you need to reduce __________________.
Friction