Friction and Gravity
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
---|---|---|---|---|---|
the force of friction causes objects to... | slow down
🗑
|
||||
the force of gravity causes objects to... | accelerate downward
🗑
|
||||
friction | the force that one surface exerts on another when 2 rub against each other
🗑
|
||||
friction acts in an _____ direction to the object's direction of motion | opposite
🗑
|
||||
friction _____ motion | opposes
🗑
|
||||
the strength of friction depends on: | 1. the type of suface2. how hard the surfaces push together
🗑
|
||||
3 types of friction: | 1. sliding friction2. rolling friction3. fluid friction
🗑
|
||||
sliding friction | 2 solid surfaces sliding across each other
🗑
|
||||
rolling friction | creates less friction than sliding, requires less force
🗑
|
||||
fluid friction | fluid keeps surfaces from making direct contact and thus reduces friction-least amount of friction
🗑
|
||||
fluid- | liquid or gas
🗑
|
||||
what is used in machines to reduce friction | oil
🗑
|
||||
free fall | when the only force acting on a falling object is gravity
🗑
|
||||
an object in free fall ____ as it falls | accelerates
🗑
|
||||
in free fall, gravity is a _____ force | unbalanced
🗑
|
||||
the acceleration due to the force of gravity is _____ | 9.8 m/s
🗑
|
||||
all objects in free fall accelerate regardless of_________ | mass
🗑
|
||||
although your ____ would be the same on a different planet or moon, your ____ would be different | mass, weight
🗑
|
||||
the force of gravity on earth's moon is about _____ that on earth | 1/6
🗑
|
||||
gravity depends on: | 1. mass2. distance
🗑
|
||||
gravity | the force that pulls objects towards earth
🗑
|
||||
projectile | an object that is thrown
🗑
|
||||
air resistance | a type of fluid friction
🗑
|
||||
terminal velocity | the greatest velocity of an object in free fall
🗑
|
||||
weight | the force of gravity on a person or object on the surface of the planet
🗑
|
||||
gravity | the force that pulls objects towards earth
🗑
|
||||
projectile | an object that is thrown
🗑
|
||||
air resistance | a type of fluid friction
🗑
|
||||
terminal velocity | the greatest velocity of an object in free fall
🗑
|
||||
weight | the force of gravity on a person or object on the surface of the planet
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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
Created by:
boogasdancer101
Popular Science sets