Revisions of Forces
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| What 2 things can a force be? | Push or Pull
🗑
|
||||
| Can you see forces? | No
🗑
|
||||
| What instrument do you use to measure forces? | Force Meter
🗑
|
||||
| What is the symbol and unit of a force? | Newtons N
🗑
|
||||
| How much is 1kg in newtons? | 10N
🗑
|
||||
| Does mass or weight change when you go to the moon? | Weight
🗑
|
||||
| What is Mass measured in? | Kg
🗑
|
||||
| What is weight measured in? | N
🗑
|
||||
| Mass | The amount of stuff or matter the thing contains.This never changes
🗑
|
||||
| Weight | The gravitational force between the object and Earth
🗑
|
||||
| Gravity | All objects have a force that attracts them towards each other
🗑
|
||||
| What 2 times does gravitational force increase? | 1)The masses are bigger2)The objects are closer
🗑
|
||||
| What 2 things do you need to know to work out pressure? | 1)Force or weight applied2)The area other which the force or weight is applied
🗑
|
||||
| What is the equation for pressure? | Pressure=Force/area/means divided
🗑
|
||||
| Give 2 examples of pressure | 1)Chair legs2)Drawing pins
🗑
|
||||
| How do we show forces in a force diagram? | 1)Longer or thicker arrow shows how big the force is2)The direction in which the arrow is pointing
🗑
|
||||
| What is a balanced force? | When 2 forces of equal size are working on an object
🗑
|
||||
| What happens with a balanced force on a stationary object? | It stays where it is
🗑
|
||||
| What happens with a balanced force on a moving object? | It stays the same speed
🗑
|
||||
| What is an unbalanced force? | When 2 forces working on a n object are not of equal size
🗑
|
||||
| What happens with an unbalanced force on a stationary object? | It starts to move
🗑
|
||||
| What happens to an unbalanced force on a moving object? | It changes direction or speed
🗑
|
||||
| How do you work ot the resultant force? | The biger force minus the smaller forcee.g.100N-20N=80N
🗑
|
||||
| What is friction? | When 1 object moves by another object.Friction makes it harder to move
🗑
|
||||
| Give 3 useful friction forces? | 1)Friction between our shoes and the floor stop us slipping2)Friction between tyres and roads to stop us from skidding3)Friction between brakes and wheels to slow down the cars and bikes
🗑
|
||||
| What is air resistance? | Air resistance is like friction but in the air.It slows you down
🗑
|
||||
| What do you need to know to work out a moment? | 1)Distance from pivot2)Force
🗑
|
||||
| What is the equation of a moment? | Moment=Distance*Force* means multiply
🗑
|
||||
| Pivot | Like in the middle of a see saw.The middle of a turn.
🗑
|
||||
| What is a moment measured in? | Nm Newton metre( Dont get confused by Newton meter)
🗑
|
||||
| Give 4 examples of moments | 1)Spanner2)See Saw3)Scissors4)Door
🗑
|
||||
| What 5 things can forces make an object do? | 1)Speed up2)Slow down3)Change direction4)Turn5)Change shape
🗑
|
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:
bookcase
Popular Science sets