Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
SP15
GCSE Separate 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 unit do we measure pressure in? | Pascal |
| When calculating the pressure the force has to be | to the surface |
| What is equation for pressure? | Pressure = force normal to the surface/ area of surface |
| What are fluids? | Liquids and gases |
| What is atmospheric pressure? | 100,000Pa |
| What happens to the pressure as you get deeper in the sea? | It increases. |
| What happens to the air pressure as you climb a mountain? | Decreases |
| Why would there be a greater pressure 5 m below the sea level, than 5 m deep in a swimming pool? | IT HAS A HIGHER DENSITY |
| Why don’t skiers sink in the snow? | As their weight is spread over a large area and so the pressure is reduced. |
| What is the difference between a sharp and a blunt knife? | Sharp knife has a smaller surface area, so the pressure is greater so cuts more easily. |
| What is the equation for pressure on a surface? | Pressure = force normal to the surface/ area |
| What is the equation for the pressure due to a column of liquid? | Pressure = height of the column x density of liquid x gravitational field strength. |
| If the density of water is 1000kg/m3 and g=10N/kg, what is the pressure due to water at a depth of 5m? | P= h x ρ x g P =5 x 1000 x 10= 50 000N |
| What is the cause of the upthrust force? | It is due to the pressure difference above and below the object. |
| What is the upthrust force equal to according to Archimedes? | Upthrust = weight of the fluid displaced. |
| How could you measure upthrust? | Fill up a displacement can until it stops overflowing (1) Measure the mass of an empty measuring cylinder, put under the spout (1) Gently put the object in the can and let the water flow into the measuring cylinder(1). Measure the mass of measuring cylin |
| If an object is floating what is the relationship between the weight and the upthrust? | Weight downwards = upthrust upwards. |
| If an object sinks what can you state about the forces weight and upthrust? | Weight is greater than the upthrus. |
| Why can a hot air balloon rise? | Upthrust is greater than the weight. |
| If a cube of wood whose sides are each 2m long is half submerged in water and the density of water =1000kg/m3. What is the weight of the block? | As it floats weight = upthrust Upthrust = weight of the fluid displaced = mass of fluid x g = (density of water x volume displaced) x g = 1000kg/m3 x (2m x2m x 1m) x 10N/kg= 40 000N |
| 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
Popular Physics sets