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77 Cards in this Set
- Front
- Back
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What is force? |
A push or pull |
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What is force measured with? |
A spring balance |
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What is the unit for force? |
The Newton |
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What are three affects of force? |
1. Start or Stop movement 2. Change direction 3. Change speed |
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How many types of forces are there? |
Five |
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Name the types of forces? |
Friction Magnetism Air pressure Water pressure Gravity |
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What is Friction? |
A force that opposes motion |
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How is friction caused? |
When to objects/surfaces rub together |
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How can we reduce friction? |
Lubricants Wheels |
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What is gravity? |
A force of attraction between two objects |
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What is matter? |
Anything that takes up space or has mass |
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Whai is mass? |
The amount of matter an objects has |
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What is pressure? |
A continuous force exerted on an object |
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What unit is pressure measured in? |
The pascal (Pa) |
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What is the equation for pressure? |
P=f÷a |
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How many types of pressure are there? |
2 |
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Name the types of pressure? |
Air pressure and water pressure |
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What is magnetism? |
A force of attraction between a magnet and a magnet and magnetic materials |
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Name 3 magnetic materials? |
Iron Steel Cobalt |
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Name one natural magnet? |
Lodestone |
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What are the end of a magnet called? |
Poles |
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What side of a magnet attracts? |
The north and the south |
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Name the two kinds of magnets? |
Permanent and temporary magnets |
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How can permanent magnets lose there magnetism? |
By dropping on a hard surface or by banging it hard |
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Name one temporary magnet? |
Electromagnet |
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Explain how an electromagnet works? |
When connected to a power source it is magnetized |
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What is speed? |
How fast an object moves in time |
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What is velocity? |
Speed in a given direction |
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What is speed measured in ? |
Meter per second (m/s) |
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What is the formula for speed? |
S=d÷t |
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What is a machine? |
An object or device that makes work easier |
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What is work? |
Work is done when force is applied on an object and that object moves |
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What is energy? |
The ability to do work |
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What is a compound machine made of? |
Two or more simple machine |
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What is a complex machine? |
It has a enginerical advantage (it has an engine) |
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How many types of simple machines are there? |
7 |
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Name the types of simple machines? |
Pulley Lever Wheel and axle Screws Incline plane Wedges Gears |
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What is a lever? |
A rod or wood that balances at a certain point |
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How many parts does a lever have? |
4 |
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Name the parts of the lever? |
Fulcrum Load Effort Rod/bar |
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What is in the middle of the 1st, 2nd and 3rd class lever? |
1st- Fulcrum 2nd- Load 3rd- Effort |
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Give 2 examples of a first class lever? |
Seasaw Scissor |
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Give an example if a second class lever? |
Wheel barrel Nut cracker |
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Give an example of a third class lever? |
Broom Fishing rod |
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What is a pulley? |
A wheel wiyh a grooved rim and a rope |
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Name the types of pulleys? |
Fixed Moveable Block and Tackle |
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What is kinitic energy? |
Energy in motion |
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What is potential energy? |
Stored energy |
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What are coal oils and natural gases called? |
Fossil fuels |
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What is physics? |
The study of the relationship between matter and energy |
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What is kinetic and potential energy together referred as? |
Mechanical energy |
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Objects that move with a constany speed in a circulator path are affected by? |
Centripetal force |
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What is energy measured in? |
Joules |
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What is work measured in? |
Joules |
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What is distance measured ? |
Meters |
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What is temperature? |
How hot or cold it is |
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What is temperature measured in? |
Celcius Fahrenent Kelvin |
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What is Temperature measured with? |
Thermometer |
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Nane the different types of thermometers? |
Mercury Alcohol Clinical |
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What is the boiling point of water? |
100 ºC or 212ºF |
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What is tge frezzing point of water? |
0ºC or 32ºF |
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What is the human body normal temperature? |
37ºC or 98ºF |
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How does heat travel? |
Though Conduction Convection Radiation |
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Conduction moves though s________ |
Solids |
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Convention move though l_________ and g__________ |
Liquids and gases |
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What is a conductor? |
Materials that allows heat to pass through them |
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What is an insulator? |
A material that doesn't allow heat to pass through |
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What is radiation? |
Heat that travels though space |
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What are three effects that heats causes on solids? |
Expand Decompose Change shape and its state |
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How does heat affect liquids? |
It gets thinner |
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What is the job of the microscope? |
To help us see things that we cannot see without a naked eye |
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How is the microscope carried? |
By the base and arm |
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What is the joob of the diaphragm on a microscope? |
To control the amount of light that reaches the specimen |
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What is the name of the two adjustment knobs on a Microscope? |
Fine and coarse knob |
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How many types of microscope are there? Name them. |
2 Light and electron microscopes |
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What is the size of magnification on a compound microscope |
4x 10x 40x |
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What Is the stage used for? |
To hold the object |
