Physics: Simple Machines and Relativity | Baamboozle - Baamboozle

Special relativity says that measurement of motion depends on 2 things:

Where the person measuring is and how fast they are going

Mass of the thing being measured and what kind of ruler.

The time and the amount of energy it takes to measure it

General relativity says time runs ___________ near a gravitational field.

Slower

Quicker

the same

What are the two types of relativity?

Special Relativity and General Relativity

True or False: In the theory of relativity, all motion can be measured against a fixed point called, “the ether.”

False

In the early 1900’s a scientist named _________ ___________ developed the theory of relativity.

Albert Eistein

Michael Faraday

Benjamin Franklin

Isaac Newton

Relativity means that details about 1 thing are considered as compared to other things. For example, the height of a 3 year old is considered _______, as compared to an infant, but _________, as compared to a 12 year old

Tall, short

Short, tall

The same as

Which simple machine is represented by a screw?

Inclined plane wrapped around a pole

Gear

Pulley

Lever

Which simple machine is represented by a hammer?

Lever

Pulley

Inclined plane

Wheel and axle

Which simple machine is represented by a bicycle?

wheel and axle

lever

pulley

gears

Which simple machine is represented by a ramp?

Inclined plane

Pulley

Wheel and axle

Lever

Which simple machine is represented by a see-saw?

Lever

Pulley

Inclined plane

Gears

In a sailboat there is a compound pulley to raise a sail (like a flag on a flagpole.) Using the K'nex pulley, we pulled the string a _____________ distance than the “sail” was raised, making it ___________ to raise the sail.

Longer, easier

Shorter, easier

Longer, harder

Shorter, harder

For gears, we made a K’nex crank fan. There were 2 gears: the driver gear (which was connected to the hand crank) and the driven gear (which was connected to the fan.) Which set-up with the gears made the fan go the fastest?

Driver gear: big; Driven gear: small

Driver gear: small; Driven gear: big

Driver gear: medium; Driven gear: medium

For a lever, we made a K’nex balance, which acted as a simple lever, another simple machine. By moving the load (which was a paper clip with washers on it) closer to the fulcrum, we needed _________ effort (weight) to balance it.

less

more

the same amount of

Using the K-nex ramp in class, we discovered that moving the object up the steeper ramp required more ___________ of force than moving the same object up a longer, less steep ramp.

Newtons

Joules

Amps

Meters

With an inclined plane, moving a load up a ramp is easier than lifting it straight up because the effort needed is less. However, the _____________ it is moved is longer.

distance

effort

height

In the wheel and axle simple machine, like the well, the larger the wheel you crank, the more distance it is for each turn of the handle, but the _____________ it will be to turn the wheel.

easier

harder

In a wheel and axle simple machine, like the Knex well that we made in class, the handle that we turned to raise the bucket was the ________ and the pole that the string was wrapped around was the ________.

wheel, axle

axle, wheel