Forces and Motion
Changes in Motion
Work and Energy
How Machines Work
RANDOM! MUAHAHAH!
100
This tells both the speed and the direction of a moving object.
What is velocity?
100
According to Newton's second law of motion, if there s more 'this', then there will be more acceleration.
What is force?
100
This is what is needed to move an object over a certain distance.
What is a force?
100
This is a tool that makes it easier to do work. It has few or no moving parts.
What is a simple machine?
100
A knife is an example of this kind of simple machine.
What is a wedge?
200
This is any push or pull on an object.
What is a force?
200
This is the combined mass and speed of an object.
What is momentum?
200
This is the amount of work done if I use 4N of force to move something 3m. (include the units in your answer.
What is 12 Joules?
200
These are the two main classes of simple machines we learned.
What are incline planes and levers?
200
Plants change light energy into this by making sugar.
What is chemical energy?
300
To measure forces, scientists use a metric unit called "this".
What is a Newton?
300
Newton's third law states that for ever action force there is an equal and opposite 'this'.
What is reaction force?
300
The energy of motion has 'this' name.
What is kinetic energy?
300
This class of lever has the fulcrum in the middle.
What is a first class lever?
300
A roller coaster climbing a hill is storing 'this' kind of energy.
What is potential energy?
400
This is a force that works against the motion of an object.
What is friction?
400
The moon has less of 'this' so your weight on earth is 6 times greater than on the moon.
What is gravity?
400
Energy can only change form. For example, if you use the brakes on your bike, kinetic energy is changed into 'this'.
What is thermal energy?
400
This kind of pulley has a mechanical advantage of 2.
What is a movable pulley?
400
This is the tool you would use to measure the force needed to slide a book across a table.
What is a spring scale?
500
This says that an object that is not moving will stay still and an object that is moving will stay in motion.
What is inertia or Newton's first law of motion?
500
No matter where you are, this never changes.
What is your mass?
500
This is the amount of work done over a certain amount of time.
What is power?
500
Using oil helps machines increase 'this' by reducing friction. It compares the work a machine did to the work it could have done.
What is efficiency?
500
The distance between the threads of a screw is called 'this'.
What is the pitch?
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