Matter
Energy
Forces
Machines
Benefits, Downsides and Impact of Energy Sources
100

Is oxygen an example of an element?

Yes

100

Is electromagnetic radiation energy?

Yes – Ex: visible light

100

What is friction?

A force that opposes movement between surfaces

100

What is a simple machine?

Any machine with little or no moving parts that modifies an input force

100

What is the difference between renewable and non-renewable sources?

Renewable sources can be replenished faster than or equal to the time it takes to extract while non-renewable sources are extracted faster than they are replenished

200

What is the difference between mixtures and compounds?

Compounds: new substances and can't be separated their ingredients 

Mixtures: can be separated into their ingredients and aren’t new substances 

200

What does the law of the conservation of energy say?

Energy cannot be created or destroyed  

200

How does gravity keep objects from floating off Earth?

It pulls everything down towards the center of the earth

200

What is mechanical advantage?

The maximum force multiplication a machine makes with forces like friction

200

Coal is an example of a non-renewable energy source. What is the other major downside of coal?

It heavily pollutes the atmosphere

300

Identify the reactant(s) and product(s) in this chemical equation: C2H4 + H2O --> CH3CH2OH

Reactants: C2H4 and H2

Product: CH3CH2OH

300

What are some examples of renewable energy sources?

Some examples: Hydroelectric, Wind, Solar

300

What is a balanced force?

When two opposing forces are equal, so they cancel out

300

What is ideal mechanical advantage?

The maximum force multiplication a machine makes without a forces like friction

300

What is the MOST abundant renewable energy source on Earth?

Solar power/The sun

400

As water is heated closer to its boiling point, does it experience thermal expansion or thermal contraction?

Thermal Expansion – The volume of water increases as it is heated

400

Is sound energy?

Yes – Sound waves are vibrations that transfer energy

400

If two people push on a box with 5 newtons to the left and 17 newtons to the right, which way will the box move?

To the right

400

What are the 6 simple machines?

Lever, pulley, wheel and axle, inclined plane, screw, wedge

400

How do hydroelectric dams affect wildlife?

Blocks fish migration, changes river direction and temperature, and fragments habitats

500

What is the streak test?

The process of identifying a mineral through its powder form by rubbing against a porcelain slab

500

Is nuclear power considered renewable energy? 

No – A non-renewable fuel must be extracted to create energy 

500

Is slowing down an example of acceleration?

Yes – Any change in speed or direction is acceleration

500

What is the formula for ideal mechanical advantage?

IMA = input distance/output distance

500

What are downsides to wind energy/wind turbines?

Noise level, Cost, birds dying (they get sucked into the blades)