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