Ecosystem Test Flashcards
(29 cards)
What is the force of friction?
Is the force applied to an object when it moves against the surface of another object
Why is friction important when you walk
Because if u didn’t have it you would slip everywhere
How can u reduce friction
By making a surface smoother u can also put oil or grease in the surface
What is weight measured in
Newtons
What is mass measured in
Grams
Density
How tightly matter is packed into a material
What is boyancy
The up thrust of the water is equal to the object on the surface
What is friction
Friction is when two surfaces rub together
What is a force
Push pull or twist
Why don’t you fall through the floor
The gravity pulling towards the centre of the earth is not that strong so it does not pull u in it just puts a shield up to keep u on the ground
What are non contact forces
Gravity magnetic force electrostatic
What is friction
When two objects rub against each other slows it Down
What is mass
How much matter is compacted into one object
What is density
How tightly matter is packed into an object
Mass divided by volume
What does a force do
Chanage direction direction
How do we represent forces
Arrows
What holds water on a coin
Surface tension
Contact forces
Thrust,friction,compression,air resistance
When is friction a good thing
When your on the road applies brakes
What is a leaver
A simple machine
What do all leavers have in common
All have a pivort and effort and load
What is the first class leaver
Seesaw
Second class leaver
Well barrows
Third class leaver
Fishing rod
