Science Investigation 2 and 3

During convection, more dense currents _________ and less dense currents _________.

• sink, rise
• rise, sink

Tags

NGSS.MS-ESS2-6

Adding salt to water will make the water ___________ dense compared to water without salt.

• more
• less

Convection can take place in _________________.

• solids only

• liquids only

• liquids and gases only

• solids, liquids and gases

Tags

NGSS.MS-ESS2-6

Liquids and gases are together called ___________.

• Fluids

• Matter

• Solvent

• None of the above

Heat transfers from an area of ____temperature to an area of ___ temperature.

• high to low
• low to high
• high to high
• It can travel high to low and low to high. 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-3

What is the formula for density?

• density = mass x volume
• density = mass / volume
• density = mass + volume
• density = mass - volume

Why do objects sink or float in H₂O?

• Because their densities are higher or lower than compared to water

• Because their densities are using gravity to pull down

• Because their densities are heavier or lighter

• Because their mass and volumes are equal

Select each statement that helps explain what is happening in the system when the jar is squeezed. If the statement does not help or you know is not true, don't select it.

• The air particles in the jar become smaller

• The air particles inside the jar collide more.

• The particles in the jar push on the water in the straw

• The water in the straw goes down because the water particles are compressed.

• Nothing happens to the air particles in the bottle when the jar is squeezed.

Answer explanation

Tags

NGSS.MS-PS2-2

True or False

When thermal energy is added to a fluid, the motion of the particles speeds up

• True

• False

Tags

NGSS.MS-PS1-4

When thermal energy is added to a fluid, the particles in the fluid move farther apart.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4