Name ______Date ______Class ______
EPS - Quarter 3 MCA Review Guide
Forces
Define the following:
Air Resistance:
Net force:
Inertia:
Newton’s First Law of Motion:
Newton’s Second Law of Motion:
Newton’s Third Law of Motion:
Momentum:
Law of Conservation of Momentum:
Centripetal Force:
Balanced forces:
Two people push a box from opposite directions, one with a force of 30 N to the left and the other with a force of 50 N to the right. What is the net force on the box? Explain the movement of the box.
What would be the net force on the box if the forces were the same?
Explain the movement on the box.
Calculate the following
A 3,000 kg truck is traveling at 80 km/hr. If one of his tires explodes and it hits and transfers all of its momentum to a 1,000 kg car parked in the breakdown lane, how fast will the new vehicle be traveling after they collide?
What is the momentum of the truck?
What is the momentum of the car after the collision?
A railroad car on a train track with a mass of 50 kg is moving at a speed of 2 km/hr. It bumps into another car on the track with a mass of 30 kg and they stick together and move off together. What is the speed of the 2 cars after the collision?
A crumpled piece of paper and a flat piece of paper were both dropped at the same time from the same point 10 meters from the ground. The crumpled paper took 3 seconds and the flat paper took 6 seconds to hit the ground.
Calculate the speed of each paper.
Explain why they took different amounts of time to reach the ground.
Electricity
Define the following:
Conductor:
Insulator:
Static Electricity:
Static Discharge:
Define the four essential parts of a circuit. Give an example of each.
1.
2.
3.
4.
Diagram a series and a parallel circuit with 2 resistors in each.
Include four necessary parts to complete a circuit.
SERIES PARALLEL
What is the difference between each?
What are three factors that influence resistance of a wire?
1.
2.
3.
Differentiate between an insulator and a conductor. Give an example of each.
What is the function of a fuse or a circuit breaker?
Define Ohm’s Law (describe what happens to each variable as another variable changes)
Calculate the following problems using Ohm’s Law. Show all work.
What resistance would produce a current of 240 amps from a 9 volt battery?
.
What voltage produces a current of 500 amps with a resistance of 25 ohms?
Differentiate between electric current and static discharge.
What is lightning? What causes the separation of charge within the cloud?
Describe in four steps.
Magnetism
Define the following
Magnetic domains:
Magnetic poles:
magnetic field:
Electromagnetic induction:
Commutator:
What are two factors which influence the strength of an electromagnet? How do they influence the strength?
1.
2.
Complete the following table
Electric Motor / GeneratorIdentify the energy conversion. (converts what type of energy to what type of energy?)
What makes the electromagnetic coil rotate?
What is the source of the current that flows in its coil?