13869122
Description
Flashcards by Those Crepes Are Safe Fam ツ, updated more than 1 year ago
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Created by Those Crepes Are Safe Fam ツ
almost 6 years ago
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| Question | Answer |
| \What is the unit of current? | Amps. |
| How many joules are in a kilojoule? | 1000. |
| What is a Sankey diagram? | A Sankey diagram is an energy transfer diagram that shows the proportion of energy transferred in different ways. |
| Describe the energy transfers that happen when an archer pulls back and then releases a bow to shoot an arrow. | Elastic potential energy when the archer pulls back the bow and kinetic energy when you shoot the arrow. |
| Which of these is not a fuel? a) petrol b) sugar c) coal d) air | d) air |
| What are the three fossil fuels? | Coal, Gas, Oil. |
| Which of these fuels are not renewable Hint: There are 2. a) Coal b) Gas c) Wind | a) Coal and b) Gas |
| What does dissipated mean? | When energy becomes spread out wastefully. |
| What is the formula triangle for speed? | Speed = Distance travelled ________________ Time taken |
| On a distance time graph, what does it mean when the line on the graph is horizontal? | The object has stopped moving. |
| On a distance time graph, what does it mean when the line on the graph is a straight upward line? | The object is going at a consant speed. |
| On a distance time graph, what does it mean when the line on the graph is an upward-sloping line. | It means that the object is accelerating. |
| What are independent variables? | The ones we can change. |
| What are dependent variables? | A variable whose value depends on another. |
| What is correlation? | Correlation is a statistical measure that indicates the extent to which two or more variables fluctuate together. |
| If the independent variable is discontinuous, what chart should you use? | Bar chart. |
| Two cars are going opposite directions, one at 70mph, the other at 60mph. How fast does it look? | 130mph because you add them together. |
| Two cars are going the same direction, one at 60mph, the other at 20mph. How fast does it look? | 40mph because you minus the numbers. |
| What forces act on a plane in the sky? | Air resistance, gravity lift and thrust. |
| What is a gravitational field? | A gravitational field is an area in which an object feels a force. |
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