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117 Cards in this Set
- Front
- Back
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Motions occurs when... |
An object changes its position relative to other objects or a frame of reference. |
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Speed |
The rate of change of DISTANCE |
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Instantaneous speed |
Actual speed at a particular point in time |
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How do you calculate instantaneous speed? |
Finding the average speed over a small time interval |
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What is a scalar quantity? |
Described by their magnitude only |
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What is a vector quantity? |
Needs both magnitude and direction eg. 1km.h South |
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What is distance? |
Measure of how far an object has moved from its starting point |
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What is displacement? |
How far - in a straight line - an object is from its starting point, and the direction of its finish position from its starting position |
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What is a scalar quantity? |
Described by their magnitude only |
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What is a vector quantity? |
Needs both magnitude and direction eg. 1km.h South |
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What is distance? |
Measure of how far an object has moved from its starting point |
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What is displacement? |
How far - in a straight line - an object is from its starting point, and the direction of its finish position from its starting position |
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What is velocity + its unit? |
The rate of change of displacement
M.s-1 + direction |
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What is the difference between average velocity and instantaneous speed? |
Average velocity is calculated using the final displacement while average speed uses total distance travelled.
Both have a magnitude value however only the velocity requires a direction of travel to be stated also. |
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What is the difference between average velocity and instantaneous speed? |
Average velocity is calculated using the final displacement while average speed uses total distance travelled.
Both have a magnitude value however only the velocity requires a direction of travel to be stated also. |
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What does a displacement-time graph show? |
Shows how displacement changes with time for a linear journey. |
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What is the difference between average velocity and instantaneous speed? |
Average velocity is calculated using the final displacement while average speed uses total distance travelled.
Both have a magnitude value however only the velocity requires a direction of travel to be stated also. |
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What does a displacement-time graph show? |
Shows how displacement changes with time for a linear journey. |
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How do you calculate the velocity on a displacement-time graph? |
Velocity = gradient |
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What is the difference between average velocity and instantaneous speed? |
Average velocity is calculated using the final displacement while average speed uses total distance travelled.
Both have a magnitude value however only the velocity requires a direction of travel to be stated also. |
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What does a displacement-time graph show? |
Shows how displacement changes with time for a linear journey. |
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How do you calculate the velocity on a displacement-time graph? |
Velocity = gradient |
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What is the equation for velocity? |
V = change of s / change of t |
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What is the difference between average velocity and instantaneous speed? |
Average velocity is calculated using the final displacement while average speed uses total distance travelled.
Both have a magnitude value however only the velocity requires a direction of travel to be stated also. |
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What does a displacement-time graph show? |
Shows how displacement changes with time for a linear journey. |
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How do you calculate the velocity on a displacement-time graph? |
Velocity = gradient |
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What is the equation for velocity? |
V = change of s / change of t |
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What is the formula for calculating the gradient? |
G = rise / run |
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What is the difference between average velocity and instantaneous speed? |
Average velocity is calculated using the final displacement while average speed uses total distance travelled.
Both have a magnitude value however only the velocity requires a direction of travel to be stated also. |
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What does a displacement-time graph show? |
Shows how displacement changes with time for a linear journey. |
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How do you calculate the velocity on a displacement-time graph? |
Velocity = gradient |
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What is the equation for velocity? |
V = change of s / change of t |
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What is the formula for calculating the gradient? |
G = rise / run |
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What does a straight line represent on a displacement-time graph? |
Constant velocity |
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What is the difference between average velocity and instantaneous speed? |
Average velocity is calculated using the final displacement while average speed uses total distance travelled.
Both have a magnitude value however only the velocity requires a direction of travel to be stated also. |
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What does a displacement-time graph show? |
Shows how displacement changes with time for a linear journey. |
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How do you calculate the velocity on a displacement-time graph? |
Velocity = gradient |
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What is the equation for velocity? |
V = change of s / change of t |
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What is the formula for calculating the gradient? |
G = rise / run |
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What does a straight line represent on a displacement-time graph? |
Constant velocity |
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When the line curves on a displacement-time graph, what does it mean? |
It is accelerating |
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What is the difference between average velocity and instantaneous speed? |
Average velocity is calculated using the final displacement while average speed uses total distance travelled.
Both have a magnitude value however only the velocity requires a direction of travel to be stated also. |
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What does a displacement-time graph show? |
Shows how displacement changes with time for a linear journey. |
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How do you calculate the velocity on a displacement-time graph? |
Velocity = gradient |
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What is the equation for velocity? |
V = change of s / change of t |
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What is the formula for calculating the gradient? |
G = rise / run |
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What does a straight line represent on a displacement-time graph? |
Constant velocity |
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When the line curves on a displacement-time graph, what does it mean? |
It is accelerating |
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How do you calculate the instantaneous velocity on a displacement time graph? |
Drawing a tangent and calculating its gradient |
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What does a velocity-time graph show? |
How velocity changes with time for a linear journey |
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What does a velocity-time graph show? |
How velocity changes with time for a linear journey |
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What does a flat line represent on a velocity-time graph? |
Constant velocity |
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What does a velocity-time graph show? |
How velocity changes with time for a linear journey |
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What does a flat line represent on a velocity-time graph? |
Constant velocity |
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What does a sloped straight line represent on a velocity-time graph? |
Constant acceleration where velocity is changing equally in equal periods of time |
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How does you calculate the acceleration on a velocity-time graph? |
Gradient |
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How does you calculate the acceleration on a velocity-time graph? |
Gradient |
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What is the equation for calculating acceleration? |
A = change of v / change of t |
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How does you calculate the acceleration on a velocity-time graph? |
Gradient |
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What is the equation for calculating acceleration? |
A = change of v / change of t |
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How do you calculate the displacement on a velocity-time graph? |
Calculated the area underneath the line on the graph |
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What is the voltage used on the transformer of the ticker timer? |
8 volts |
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What is the voltage used on the transformer of the ticker timer? |
8 volts |
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What is a hypothesis? |
An educated guess about what you think will happen
A testable hypothesis |
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What is the voltage used on the transformer of the ticker timer? |
8 volts |
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What is a hypothesis? |
An educated guess about what you think will happen
A testable hypothesis |
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What is a an aim? |
The purpose of your experiment |
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What is the voltage used on the transformer of the ticker timer? |
8 volts |
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What is a hypothesis? |
An educated guess about what you think will happen
A testable hypothesis |
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What is a an aim? |
The purpose of your experiment |
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What is a method? |
Instructions of how to do an experiment |
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What is the voltage used on the transformer of the ticker timer? |
8 volts |
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What is a hypothesis? |
An educated guess about what you think will happen
A testable hypothesis |
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What is a an aim? |
The purpose of your experiment |
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What is a method? |
Instructions of how to do an experiment |
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What is the independent variable? |
The variable you have control over, what you can choose and manipulate. It is usually what you think will affect the dependent variable. |
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What is the voltage used on the transformer of the ticker timer? |
8 volts |
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What is a hypothesis? |
An educated guess about what you think will happen
A testable hypothesis |
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What is a an aim? |
The purpose of your experiment |
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What is a method? |
Instructions of how to do an experiment |
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What is the independent variable? |
The variable you have control over, what you can choose and manipulate. It is usually what you think will affect the dependent variable. |
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What is a dependent variable? |
The variable you observe or measure, what is affected during the experiment. The dependent variable responds to the independent variable. |
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What is the voltage used on the transformer of the ticker timer? |
8 volts |
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What is a hypothesis? |
An educated guess about what you think will happen
A testable hypothesis |
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What is a an aim? |
The purpose of your experiment |
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What is a method? |
Instructions of how to do an experiment |
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What is the independent variable? |
The variable you have control over, what you can choose and manipulate. It is usually what you think will affect the dependent variable. |
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What is a dependent variable? |
The variable you observe or measure, what is affected during the experiment. The dependent variable responds to the independent variable. |
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What is a controlled variable? |
The variables you keep the same/maintain throughout the experiment and subsequent repeats to ensure that they do not impact on the results so that only the independent variable can influence the results |
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What is the voltage used on the transformer of the ticker timer? |
8 volts |
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What is a hypothesis? |
An educated guess about what you think will happen
A testable hypothesis |
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What is a an aim? |
The purpose of your experiment |
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What is a method? |
Instructions of how to do an experiment |
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What is the independent variable? |
The variable you have control over, what you can choose and manipulate. It is usually what you think will affect the dependent variable. |
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What is a dependent variable? |
The variable you observe or measure, what is affected during the experiment. The dependent variable responds to the independent variable. |
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What is a controlled variable? |
The variables you keep the same/maintain throughout the experiment and subsequent repeats to ensure that they do not impact on the results so that only the independent variable can influence the results |
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How do you justify validity? |
Is it a plausible, viable method? Controlling variables (having one independent and dependent variable and a control if needed (this depends on the experiment, something to compare results with to determine effect of independent variable)) |
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What is the voltage used on the transformer of the ticker timer? |
8 volts |
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What is a hypothesis? |
An educated guess about what you think will happen
A testable hypothesis |
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What is a an aim? |
The purpose of your experiment |
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What is a method? |
Instructions of how to do an experiment |
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What is the independent variable? |
The variable you have control over, what you can choose and manipulate. It is usually what you think will affect the dependent variable. |
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What is a dependent variable? |
The variable you observe or measure, what is affected during the experiment. The dependent variable responds to the independent variable. |
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What is a controlled variable? |
The variables you keep the same/maintain throughout the experiment and subsequent repeats to ensure that they do not impact on the results so that only the independent variable can influence the results |
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How do you justify validity? |
Is it a plausible, viable method? Controlling variables (having one independent and dependent variable and a control if needed (this depends on the experiment, something to compare results with to determine effect of independent variable)) |
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How do you justify reliability? |
Consistency of results, repeating 3 times and comparing results for consistency |
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What is the voltage used on the transformer of the ticker timer? |
8 volts |
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What is a hypothesis? |
An educated guess about what you think will happen
A testable hypothesis |
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What is a an aim? |
The purpose of your experiment |
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What is a method? |
Instructions of how to do an experiment |
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What is the independent variable? |
The variable you have control over, what you can choose and manipulate. It is usually what you think will affect the dependent variable. |
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What is a dependent variable? |
The variable you observe or measure, what is affected during the experiment. The dependent variable responds to the independent variable. |
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What is a controlled variable? |
The variables you keep the same/maintain throughout the experiment and subsequent repeats to ensure that they do not impact on the results so that only the independent variable can influence the results |
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How do you justify validity? |
Is it a plausible, viable method? Controlling variables (having one independent and dependent variable and a control if needed (this depends on the experiment, something to compare results with to determine effect of independent variable)) |
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How do you justify reliability? |
Consistency of results, repeating 3 times and comparing results for consistency |
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How do you justify accuracy? |
How precise recordings are, using sensitive equipment eg. Mm lined ruler, digital balance |
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How do you justify safety precautions? |
Identify hazard, outline potential to cause harm, describe how it can be used
Eg. Hot plates are used, these can cause burns to the skin if touched, use heat proof gloves when around and handling items on the hot plate |
