2nd Semester Review
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| An airplane flies past a bird. What is the reference point? | The bird...the plane is faster so it MOVES past the bed
🗑
|
||||
| 2 factors that determine speed | distance and time
🗑
|
||||
| Difference between speed and velocity | direction
🗑
|
||||
| Example of a balanced force | Picture hanging on a wall
🗑
|
||||
| DIFFERENCE between a force and work | You can apply a force without causing an object to move...WORK requires that the object moves.
🗑
|
||||
| What does an unbalanced force cause? | Change in speed and/or direction
🗑
|
||||
| Friction | opposes motion
🗑
|
||||
| Increases Friction | Sand on ice
🗑
|
||||
| Decreases Friction | Oil
🗑
|
||||
| Law of Universal Gravitation | ALL matter has mass and ALL mass is affected by gravity
🗑
|
||||
| Relationship between mass, distance, and gravity | As mass increases, gravity increases. As distance increases, gravity decreases
🗑
|
||||
| weight | measure of gravitational force
🗑
|
||||
| weight | is NOT constant
🗑
|
||||
| weight | measured in Newtons
🗑
|
||||
| Net Force | Combination of all forces acting on an object
🗑
|
||||
| Acceleration due to gravity | All falling objects accelerate towards the earth at 9.8 m/s/s
🗑
|
||||
| Freefall | The only force acting on an object is gravity
🗑
|
||||
| Freefall | makes an astronaut appear weightless
🗑
|
||||
| momentum | depends on mass and velocity
🗑
|
||||
| Bumper cars collide. The momentum of the faster car... | decreases as the velocity of the slower car increases
🗑
|
||||
| Newton's 1st Law | A moving object that is not acted on will continue moving
🗑
|
||||
| Newton's 1st Law | An object at rest will remain at rest
🗑
|
||||
| Projectile Motion | Combination of horizontal force and vertical force
🗑
|
||||
| A dart's vertical force is a result of... | gravity
🗑
|
||||
| A dart's horizontal force is a result of... | the person throwing it
🗑
|
||||
| When playing darts, aim high because of... | projectile motion
🗑
|
||||
| When you swim and push against the wall of the pool, this is an example of... | Newton's 3rd Law
🗑
|
||||
| Work output | Work done on an object by a machine
🗑
|
||||
| Work input | Work done by you on a machine
🗑
|
||||
| mechanical efficiency | comparison of work output to work input
🗑
|
||||
| Work done on an object depends on ... | force applied and distance the object moved
🗑
|
||||
| How does a ramp make work easier | By increasing the distance and decreasing the force you have to apply
🗑
|
||||
| Formula for work | Force x distance
🗑
|
||||
| What is mechanical advantage? | Force output (force the machine applies) / Force input (force you apply to the machine)
🗑
|
||||
| You apply 10 N of force to a wheel barrow. the wheel barrow applies 50 N of force to a boulder. What is the Mechanical Advantage of the wheel barrow? | MA=WO/WI
MA=50N/10N
MA=5
🗑
|
||||
| Difference between a fixed and moveable pulley. | Fixed pulley only changes direction of the force...mechanical advantage is always 1
🗑
|
||||
| Material that allows charges to move easily | Conductor
🗑
|
||||
| Material that does not allow charges to flow easily | Insulator
🗑
|
||||
| Loss of static electricity and charges move off of it | electric discharge
🗑
|
||||
| Part of a cell where charges enter and exit | electrode
🗑
|
||||
| Relationship between resistance and current | As the resistance decreases, the current increases
🗑
|
||||
| 3 basic parts of a circuit | power source, wire, load
🗑
|
||||
| Good conductors have low... | resistance
🗑
|
||||
| Circuit that provides only one path to the energy source | Series Circuit
🗑
|
||||
| electric current is made from a ... | changing magnetic field
🗑
|
||||
| This can demagnetize a magnet. | high temperatures
🗑
|
||||
| A coil of wires with an electric current | Solenoid
🗑
|
||||
| Magnets are strongest at the.... | poles
🗑
|
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:
tonyaldudman
Popular Science sets