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54 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is the independent variable? |
The one you change |
D.R.Y. M.I.X. |
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What is the dependent variable? |
The one that changes in response to the independent variable, the one you measure. |
D.R.Y. M.I.X. |
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What is an observation? |
Factual data that you or someone else can see, hear, smell, taste or measure |
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What is meant when we say the independent variable can have different levels? |
Different amounts that you set the independent variable to. |
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The variable plotted on the horizon or x-axis is the |
Independent variable |
Dry mix |
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What are factors that could be changed but which are deliberately held constant? |
Constants |
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In a graph showing temperature change of a material over time, temperature change is the |
Dependent variable |
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An explanation of an event that is based on repeated observations and experiments is a |
Theory |
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A standard for comparison that helps to ensure that the experimental result is caused by the condition being tested is the |
Control |
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what is motion? |
The change in position |
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What is distance |
How far something's traveled |
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How does distance compare to displacement |
This is how far you've traveled, displacement is how far you are from where you started |
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How is average speed measured |
Total distance ÷ total time |
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On a distance versus time graph, which is on the X and which is on the y-axis |
Time is on the x-axis, distance is on the y-axis |
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How does speed relate to distance and time |
Speed = distance ÷ time |
Use an equation for your answer |
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How is speed different from velocity |
Speed is distance traveled in a unit of time, velocity is speed and direction of its motion |
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What is the formula for acceleration |
Final velocity - initial velocity ÷ time |
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On a speed versus time graph, what does the slope tell you |
Acceleration |
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The upward force on an object falling through the air is called |
Air resistance |
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The relationship among Mass, force, and acceleration is explained by |
Newton's second law of motion |
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On earth a feather will fall more slowly than a brick because of |
Air resistance |
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Air resistance is a type of |
Friction |
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How does friction affect the motion of an object |
It opposes it |
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In the absence of air, a penny and a feather that are dropped from the same height at the same time will |
Land at the same time |
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The acceleration due to gravity is |
9.8 m/s squared |
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For any object, the greater the force that's applied to it, the greater its |
Acceleration |
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As you get farther from the center of the Earth your weight will |
Increase |
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When a force is exerted on a box, an equal and opposite force is exerted by the Box. These forces are called |
Balanced forces |
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What is the relationship between balanced forces and net force |
Balanced forces have zero net force |
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The kinetic energy of an object increases as its ________ increases |
Potential energy |
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The SI unit for force is the |
Newton's |
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What is the definition of energy |
The ability to do work on an object or cause change |
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Energy because of movement is called |
Kinetic energy |
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Energy because of position is called |
Potential energy |
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The kinds of kinetic energy are |
Electrical, sound, radiant, thermal, mechanical |
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The kinds of potential energy are |
Gravitational potential, stored mechanical, nuclear potential, chemical potential |
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What is the formula for determining kinetic energy |
K = mv squared ÷ 2 |
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What is the formula for determining potential energy |
P = mgh |
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The SI unit for energy is the |
Joules |
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According to the law of conservation of energy, energy is neither |
Created or destroyed |
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Describe a transformation of energy from chemical potential to a form of kinetic energy |
Eating - moving |
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Describe a transformation of energy from one kind of energy to electrical energy |
Generator - mechanical - electrical |
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What is the definition of a wave |
A disturbance that carries energy from one place to another |
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What kind of wave moves at a right angle to its direction |
Transverse waves |
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What kind of wave Moves In Parallel to its direction |
Compressional / longitudinal waves |
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What group of waves does not need a medium in order to travel |
Electromagnetic waves |
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What is the speed of light |
300,000,000 m/s |
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What group of waves does need a medium in order to travel |
Mechanical waves |
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What are some examples of mechanical waves |
Sound waves, water waves, Stadium waves |
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Name the seven kinds of radiation within the electromagnetic spectrum and give some information about what each one does |
Radio waves- radios, microwaves- heats food, infrared- night vision, visable- see, ultraviolet- U.V. lights, xray- X-Rays, Gamma rays- radiation for cancer |
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What is the equation for Ohm's law and what do the three letters I, V & R represent |
I = V ÷ R, I- Current, V- Voltage, R- Resistance |
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What is a magnetic field |
Invisible lines of force from a magnet that go from north to south |
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How does a compass work |
The magnet in the needle is attracted to poles |
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What is an electromagnet and where are they used |
Needs electricity to work, generators |
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