IPC Fifth Six-Weeks Review

Which quantities have the greatest influence on the amount of kinetic energy of an object? Select TWO correct answers.

• mass

• velocity

• acceleration

• height

• density

Tags

NGSS.MS-PS3-1

What occurs as the kinetic energy of the molecules in a substance increases?

• The temperature of the substance decreases.

• The temperature of the substance stays the same.

• The potential energy of the substance increases.

• The molecules of the substance are moving faster.

• The temperature of the substance increases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Describe the energy at the top of a rollercoaster before the cart travels down the first hill.

Select TWO correct answers.

• A.

  potential energy, but no kinetic energy

• B.

  no potential energy since it is not moving

• C.

  no kinetic energy since it is not moving

• D.

  both kinetic and potential energy

• E.

  kinetic energy only

Water flowing around rocks in a stream slowly erode the rocks over time. What is the best explanation of what is happening to the rocks?

• A.

  The water molecules' potential energy is used to break the rock and erode it.

• B.

  The water molecules' kinetic energy is used to break the rock and erode it.

• C.

  The water molecules make hydrogen bonds with the rock and break the interior bonds of the rock.

• D.

  The rocks undergo a chemical change and slowly disintegrate.

Tags

NGSS.MS-ESS2-2

A boy at a bowling alley notices that he is able to knock down more pins with a medium weight bowling ball rolled very fast than a heavy weight bowling ball rolled slowly. What best explains this?

• In the equation for kinetic energy, velocity has a greater impact on KE than mass.

• In the equation for kinetic energy, mass has a greater impact on KE than velocity.

• In the equation for kinetic energy, momentum has a greater impact than mass.

• In the equation for kinetic energy, momentum has a greater impact than velocity.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Why is it dangerous for an archer to walk around with an arrow "nocked" and the bowstring pulled to tension?

• The trigger of the bow still has to be pulled, so it is not dangerous at all.

• The tension in the bowstring could cause the bow itself to snap.

• When tight, the bowstring has potential energy it could transfer to the arrow.

• The kinetic energy of the arrow in this scenario is zero.

Tags

NGSS.MS-PS3-5

When you charge your cell phone, why does it stay on even when unplugged?

• Because of the gravitational potential energy stored in the battery.

• Because of the elastic potential energy stored in the battery.

• Because of the chemical potential energy stored in the battery.

• Because of the kinetic energy stored in the battery.

Why are mountain avalanches so dangerous and destructive?

• Because the falling rocks and snow have kinetic energy.

• Because the large potential energy from the extreme elevation and mass that can be transformed and transferred.

• Because of the elastic potential energy stored within the mountain.

• Because of the thermodynamics due to the extremely low temperatures at high elevations.

Tags

NGSS.MS-ESS3-2

NGSS.MS-PS3-2

A pinball machine starts with a pulled back spring that starts the ball moving each turn. What type of energy is given to the spring when pulled back?

• Gravitational Potential Energy

• Elastic Potential Energy

• Kinetic Energy

• Chemical Energy

In photosynthesis, water, carbon dioxide, and light energy react to produce glucose and oxygen. Based on the law of conservation of energy, what happened to the light energy in the reaction? Select TWO correct answers.

• It was converted into chemical energy stored in the sugar.

• It was neither created nor destroyed.

• It was destroyed.

• It was converted into carbonic acid.

• It was changed into carbon dioxide gas.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3