Unit 2: Energy Transfer, EMS, Wave Interaction, NOS

What is the difference between an experiment and an investigation?

• In an experiment variables are manipulated.

• In an experiment variables are not manipulated.

• In an investigation variables are manipulated.

• They are the same because they are both scientific processes.

The variable that the scientist is intentionally changing.

• dependent variable

• independent variable

• constant

• control

Tags

NGSS.MS-PS2-2

The variable that is measured in an experiment.

• dependent variable

• independent variable

• constant

• control

Tags

NGSS.MS-PS2-2

When something is frozen...

• the molecules are the farthest apart.

• the molecules are close and can slide past one another.

• the molecules are bouncing around and colliding with each other.

• the molecules are closest together.

Tags

NGSS.MS-PS1-4

What is the process when liquid becomes a gas?

• boiling and sublimation

• vaporization and evaporation

• evaporation and sublimation

• vaporization and deposition

Tags

NGSS.MS-PS1-4

When a gas changes to a liquid or liquid changes to a solid.

• Energy increases and molecules slow down.

• Energy decreases and molecules slowdown

• Energy increases and molecules speed up.

• Energy decreases and molecules speed up .

Tags

NGSS.MS-PS1-4

What is heat flow?

• Hot travels to cold

• Cold travels to cold

• Hot travels to hot

• Cold travels to hot

Tags

NGSS.MS-PS1-4

What is the energy transfer on a cold day when you are holding a chemical hand warmer.

• from the warmer to your hand

• from your hand to the warmer

• from the air to your hand

• from the air to the warmer

Tags

NGSS.MS-PS3-3

What is an example of thermal equilibrium?

• When a hot cup of coffee transfers heat to the air.

• When the air around a popsicle transfers into the popsicle.

• When the glass of tea and the air around it are the same temperature.

• When a pizza transfers heat to the air.

What is it called when hot fluid (gas or liquid) rises and cold fluid sinks?

• Conduction

• Convection

• Radiation

• Reduction

Tags

NGSS.MS-ESS2-6