Thermal Physics

At what temperature in degrees Celsius does water freeze?

• 150

• 0

• 200

• 32

Physical change in matter from a gas to a liquid

• Condensation

• Freezing point

• Melting point

• Evaporation

Tags

NGSS.MS-PS1-4

Objects gain heat and _________. 

• expand

• contract

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

DUE TO MOTION MOLECULES HAVE___ENERGY

• KINETIC ENERGY

• POTENTIAL ENERGY

• INTERMOLECULAR FORCES

• INTRAMOLECULAR FORCES

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Alex noticed that a metal door that sticks on hot days does not stick when it cools off at night. This is because the metal contracts as it cools. The reason for this is that, as the metal cools, the atoms:

• become smaller and take up less space

•  slow down and move closer together

• merge together to form fewer atoms

• speed up and move farther apart

Tags

NGSS.MS-PS1-4

The picture shows a bimetallic strip in a fire alarm. When there is a fire outbreak, the bimetallic strip will get hot, ....

• bend downwards, complete the circuit and the alarm rings.

• bend upwards, open the circuit and the alarm will not ring.

• becomes longer, open the circuit and the alarm will not ring.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

What happens to air particles when they are heated?

• Particles move faster and expand

• Particles move faster and become closer together.

• Particles move slower and the air expands

• Particles move faster become further apart

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Calculate the energy transferred when raising the temperature of 16kg of water by 3˚C (c=4,186 J/(kg K))

• 785 J

• 1.26*10^5 J

• 2.2 kJ

• 2.0*10^5 J

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

As you hold a piece of ice, it begins to melt from the warmth of you hand on it. This is because of

• Convection

• Conduction

• Radiation

• the fact that you are the Human Torch from the Fantastic Four.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Hot coffee is stirred with a spoon; the spoon gets hot due to...

• conduction

• convection

• radiation