Motion and Pressure (Science)

Motion and Pressure (Science) (25 Cards)
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	Front cards	Back cards
1	Are solids and liquids compressible?	No they are incompressible
2	How do see saws balance?	The moments in the example above are the same.
3	How do you calculate the moment?	Multiply the force applied by the distance from the pivot
4	The bigger the force or further distance..	The bigger the moment.
5	The higher above sea level….	The lower the atmosphere pressure as the air is less dense so there are fewer collisions between particles.
6	The relative speed is 0, what’s happening?	Two objects are moving at the same speed and direction.
7	What are the turning effects of a force?	A moment
8	What does it mean if particles have more energy?	They will move quicker and collide with the container more often so the pressure will be greater.
9	What does pressure explain?	How studded boots help grip grass or why snowshoes help you walk in snow.
10	What does relative motion compare?	How fast an object is moving to another
11	What happens during the equilibrium?	All the clockwise moments added together are equal to the anti-clockwise moments added together.
12	What happens if you compress a gas?	Their will be more collisions causing a higher pressure
13	What happens if you heat a gas?	The particles will have more energy
14	What is atmosphere pressure?	Pressure that is acting on us from the air around us
15	What is pressure measured in?	Newtons per metre squared.
16	What is pressure?	The force exerted on a surface because of the weight.
17	What is speed measured in?	Metres per second.
18	What is the formula for pressure?	Force/area = Newton/ metres squared
19	What is the formula for speed?	Distance/time
20	What is the unit of moment?	Newton metres (Nm)
21	What is Upthrust is produced by?	Liquid pressure
22	What measurement can you use for small areas?	Centimetres
23	What produces gas pressure?	Collision between gas molecules and their container.
24	Why do objects flows?	Because of upthrust
25	Why does an object float?	Because the Upthrust acting on the bottom of the object is stronger that the top.