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CP13H
GCSE Combined Science Physics
| Question | Answer |
|---|---|
| What does the term elastic mean? | The object will return to its original shape when the force is removed. |
| What does the term inelastic material mean? | The object will keep their new shape when the force is removed. |
| What does malleable mean? | The object can be hammered into shape. |
| How do you calculate the extension of a spring? | New length- original length |
| What does directly proportional mean? | If one quantity doubles so does the other. |
| What does non-linear relationship mean? | The quantities do not produce a straight line graph. |
| Name a material that would produce a directly proportional force extension graph? | Spring or wire at low forces. |
| Name a material that produces a non linear force extension graph. | Rubber band. |
| If a spring extends 2 cm when 10 N are added , how much will extend when 30 N are added? | 6cm |
| If a spring extends 5 cm when 5 N are added how much will it extend if 25 N are added? | 25cm |
| What does the term elastic mean? | When the force is removed it will return to its original shape. |
| What does the term inelastic mean? | When the force is removed they keep their shape. |
| What does the term malleable mean? | The material can be hammered into shape. |
| What is the relationship between the force applied to a spring and its extension? | The force applied is directly proportional to the extension. |
| If a spring extends by 3cm when 10 N is applied, how much does it stretch when 30N are applied? | Force has gone up by a factor of 3, so extension will go up by a factor of 3, so 9cm. |
| Describe the shape of a directly proportional graph? | It is a straight line through the origin . |
| Give an example of an elastic material. | spring |
| What is the equation in words that relates force to extension? | Force =spring constant x extension |
| What is the equation in symbols that relates force to extension? | F = k x X |
| What is the equation in words for the energy transferred to spring when it is stretched? | Energy transferred = ½ x spring constant x (extension)2 |
| What is the unit of the spring constant? | Newtons per meter (N/m) |
| What is the unit of the spring extension? | Metres (m) |
| When a spring is stretched and can then return to its original length it is known as __________ _______________ | elastic deformation or elastic behaviour |
| When a spring is stretched and its length is permanently altered it is known as ___________ ____________ | Inelastic deformation or inelastic behaviour |
| The limit of proportionallity of a spring is… | the length a spring can be stretched to before it no longer returns to its original length |
| Sketch the Force (y) -Extension (x) curve for stretching a spring from no force to beyond its elastic limit. | teacher to draw on board… |
| State the equation which links extension, force and spring constant | F=ke |
Created by:
Davenant Foundation School
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