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Newton's three laws
Speed/ acceleration/velocity
Electric Circuits
Energy
Simple Machines
100
If you are leaning against a wall, the wall is exerting __________. A Half the force in the same direction B An equal force in the same direction C An equal force in the opposite direction
What is C An equal force in the opposite direction
100
Velocity is __________. A The same thing as speed B Rate of change of speed C Speed in a specific direction
What is C Speed in a specific direction
100
Electrical forces _________________ electrons. A. push and pull B. build C. light up
What is A. push and pull
100
Which of the following is a type of green energy? A. gasoline B. wind energy C. coal
What is B. wind energy
100
A __________ is a simple machine that is an inclined plane wrapped around a cylinder or cone to form a spiral. A lever B wedge C screw
What is C screw
200
14 Which of the following are examples of Newton's First Law of Motion? A Tossing a ball B Riding a skateboard C Both of these
What is C Both of these
200
Acceleration is __________. A Rate of change of position B Traveling at a constant speed C Rate of change of velocity
What is C Rate of change of velocity
200
Anything that makes matter move or change. A. force B. electricity C. energy
What is C. energy
200
Which of the following is an example of a primary energy source? A. natural gas B. light from a flashlight C. electricity
What is A. natural gas
200
A __________ is a simple machine that has a thick and a thin end. An example is a doorstop. A wedge B lever C pulley
What is A wedge
300
18 What is the correct formula for calculating force? A Force = distance x time B Force = mass x acceleration C Force = speed x distance
What isB Force = mass x acceleration
300
How far would a person travel who walked at 4 miles per hour for 4 hours? A 16 miles B 16 hours C 1 mile per hour
What is A 16 miles
300
Which of the following is not necessary for electricity to be useful in our homes and devices? A. A current B. A complete circuit C. An insulator
What is C. An insulator
300
What type of energy transfer occurs in a battery. A. electrical energy is converted into light energy. B. electrical energy is converted into chemical energy. C. chemical energy is converted into electrical energy.
What is C. chemical energy is converted into electrical energy.
300
A __________ is a simple machine that is a sloping surface. An example is a ramp. A wheel and axle B lever C inclined plane
What is C inclined plane
400
All machines lose input work to friction, so one way to improve the efficiency of a machine is by __________ friction. A reducing B increasing C inclining
What is A reducing
400
If the force applied to an object in one direction is greater than the force exerted in the opposite direction, the object will ___________. A Stop moving B Move in the direction of the greater force C Move in a curved motion
What is B Move in the direction of the greater force
400
What four things do you need to make a circuit?
What is battery, load, wires, switch
400
A __________ is a simple machine that is a wheel with a grooved rim and a rope or cable that rides in the groove. Two types are fixed and movable. A pulley B inclined plane C lever
What is A pulley
500
A(n) __________ of using a simple machine is that it helps people do work. A energy B machine C advantage
What is C advantage
500
If you are in a car accident and you are wearing a seat belt, why do you stop moving, but the soccer ball in the back seat does not? A The sudden crash frees the soccer ball B The Law of conservation of momentum C Newton's first law
What is C Newton's first law
500
Explain the difference between a simple circuit and a series circuit.
What is a simple circuit has one battery and one load, a series has multiple loads (light bulbs) with one battery.
500
Which of the following is not a form of energy? A. light B. static C. electrical
What is B. static
500
A __________ is a simple machine that is a solid bar that rotates, or turns around a fixed point. There are three classes of these. A wedge B lever C inclined plane
What is B lever