Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
NCFE Science - 7P
NCFE review - 7P
| Question | Answer |
|---|---|
| The motion of an object is always judged according to what? | a reference point |
| Motion can be described with a reference direction. Give 4 examples of a reference direction. | North, South, East, West, Up, Down |
| What can change the direction and speed of an object? | an unbalanced force |
| What is all motion relative to? | ts frame of reference |
| Friction depends on two factors. What are the two factors? | roughness and pressure |
| A force will not start moving unless what acts upon it . | unbalanced force |
| Friction is a force that opposes motion, true or false. | true |
| An object will stay in motion forever unless a what acts on it. | unbalanced force |
| What is the tendency of an object to resist change? | inertia |
| Mechanical energy can be either _____ energy or _____energy | Potential, Kinetic |
| Energy in motion is what type of energy? | Kinetic |
| Energy of position is what type of energy? | Potential |
| What can an object do if it has mechanical energy? | Work |
| When riding a skateboard ramp, when is potential energy the highest? | Top of ramp |
| When riding a skateboard ramp, when is kinetic energy the highest? | Bottom of ramp |
| What type of energy comes from a light bulb? | Light and Heat |
| What type of energy comes from a can of gasoline? | Chemical |
| What type of energy is occurring on the sun? | Nuclear and Heat |
| What type of energy comes from the sun? | Radiant |
| What type of energy occurs when two objects push or pull? | Mechanical |
| What type of energy occurs when a warmer object comes into contact with another object. | Thermal |
| When a battery or generator is connected in a complete circuit to an electrical device. | Electrical |
| Can energy changed from one form to another? | yes |
| Can energy be created or destroyed? | no |
| What is some energy is always transformed into? | heat |
| What is the term that describes the work a simple machine actually does. | Actual Mechanical Advantage |
| What is the term that describes the work a simple machine could do under perfect conditions? | Ideal Mechanical Advantage |
| A machine is a device that makes work easier by changing the s______ or _______ of a force. | size or direction |
| Mechanical advantage is the number of times the machine multiplies ________. | force |
| What is the simple machine that has a bar that pivots at a fixed point called a fulcrum? | lever |
| What is the simple machine that over wheel over which a rope, chain, or wire passes. | pulley |
| What is name of the simple machine that consist of two circular objects of different sizes? | wheel and axle |
| The mechanical advantage of the wheel and axle is the radius of the wheel divided by the _________ _ _ ______. | radius of the axle |
| What is the name of the simple machine that consist of a straight slanted surface and facilitates the raising of loads. | ramp |
| What is the name of two or more simple machines. | compound machine |
| Would scissors be considered a compound machine? | yes |
| Would a bicycle be considered a compound machine? | yes |
| Are most machines compound machines? | yes |
Created by:
s.blanchard
Popular Physical Science sets