7th Unit 4/5 Review

What is the Newtons First Law of Motion

• Objects will remain in its current motion or at rest unless an outside force acts on it

• The heavier the object the more force that is needed to move it

• For every action there is an equal and opposite reaction.

Organize these options into the right categories

Groups:

(a) Balanced

,

(b) Unbalanced

,

(c) Add

,

(d) Subtract

• change in direction

• no change in position

• net force equals zero

• Force in same direction

• no change in direction

• change in position

• net force is not zero

• change in motion

• no change in motion

• Forces in opposite direction

Tags

NGSS.MS-PS2-2

Two construction workers are pushing a metal beam at a force of 50N each. The gravel is causing a frictional force of 30N. What is the net force in this scenario?

• 70N

• 20N

• 80N

• 130N

Tags

NGSS.MS-PS2-2

Organize these options into the right categories

Groups:

(a) Conduction

,

(b) Convection

,

(c) Radiation

• Walking on hot sand

• Boiling water in a pot

• Using a hair straightener

• Beaker sitting on a hot plate

• Exposing to sunlight

• Hot air rising from a radiator

• Holding warm packet in hand

• Touching a hot stove

• Using a UV lamp

• Heat transfer in a convection oven

• Hot air balloon rising in the sky

• Steam rising from a cup of tea

• Using a tanning bed

• Using an infrared heater

• Ironing clothes

• Standing in front of a microwave

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which describes conduction?

• Heat transfer between objects that directly touch each other

• Heat transfer through liquid and gas currents

• Heat transfer through space as currents

• Heat transfer through magnetism

Which describes convection?

• Heat transfer between objects that directly touch each other

• Heat transfer through liquid and gas currents

• Heat transfer through space as currents

• Heat transfer through magnetism

Tags

NGSS.MS-ESS2-6

Which describes radiation?

• Heat transfer between objects that directly touch each other

• Heat transfer through liquid and gas currents

• Heat transfer through space as currents

• Heat transfer through magnetism

Tags

NGSS.HS-PS4-3

What is thermal equilibrium?

• 2 substances that share thermal energy equally because they are the same temperature

• When a substance is heated, particles speed up and temp is increased.

• Thermal energy moves from a higher temperature to a lower temperature

• Hot air rises and cold air sinks

Which of the following are types of mediums that thermal energy can travel through? (choose 2)

• Air

• Vacuum of space

• Water

• Insulators such as styrofoam

Organize these options into the right categories

Groups:

(a) Contact

,

(b) Non-Contact

• Sound waves

• Apple falling

• Using a touchscreen

• Shaking hands

• Pushing a button

• Iron nail moving toward magnet

• Pulling a rope

• Turning a doorknob

• Pressing a key on a keyboard

• Bolt of lightning

• Light waves

• Feather floating in air

• Heat transfer by radiation

• Writing with a pen

Tags

NGSS.MS-PS2-4

NGSS.MS-PS4-1