Replacing old windows with high-tech new windows can block which types of heat transfer?

conduction, convection, and radiation

What has happened when the air temperature in a room has gone up?

Thermal energy has transferred into the room, and the kinetic energy of the air molecules has increased.

Thermal energy has transferred into the room, and the kinetic energy of the air molecules has decreased.

Thermal energy has transferred out of the room, and the kinetic energy of the air molecules has increased.

Thermal energy has transferred out of the room, and the kinetic energy of the air molecules has decreased.

In the winter, hot air from the heater rises, making air near the ceiling warmer than the air near the floor. many ceiling fans have a setting said to reduce heating energy costs. How could that work?

The spinning blades cause the hot air on the ceiling to mix through the rest of the room and heat the room by convection.

The ceiling fan is in contact with the ceiling and heats the room by conduction.

The spinning blades radiate heat through the air and heat the room by radiation.

It cannot work, Ceiling fans can only cool rooms.

The relationship between the temperature of a system and the total energy of the system depends on what factors?

The type, states and amount of matter in the system.

Whether or not all the parts of the system are connected.

The ability of scientists to accurately measure the thermal energy.

Whether or not the system is in motion at the time.

Students are trying to build a device that will prevent the flow of thermal energy. In order to test the device, the students will place samples of hot water in the device for one hour. What is the most important measurement students will need to take in order to test the effectiveness of the device?

The change in temperature of water during the hour.

The maximum volume of water that the device is able to contain.

The bloiling point of the water before being placed in the device.

The density of the materials used to build the device.

Students are trying to investigate how the amount of matter affects heat s. They decide to measure the rate at which ice melts. To gather data that will be helpful to their investigation, which of the following is most important?

Using ice samples of different sizes.

Melting the ice using a heat lamp.

Covering some ice samples with plastic.

Using the same stopwatch each trial.

When you hold an ice cube in your hand, heat is transferred from...

It just appears in the ice cube.

Nowhere, because it isn't transferred.

Law of Conservation of Energy says...

Energy CANNOT be created or destroyed but CAN be changed into another form of energy.

Energy CAN be created or destroyed but CANNOT be changed into another form of energy.

Energy CANNOT be created, destroyed, or changed into another form of energy.

There is not Law of Conservation of Energy.

How do molecules at warm temperatures differ from molecules at cool temperatures?

At warm temperatures, molecules move around more.

At warm temperatures, molecules grow in size.

At warm temperatures, molecules exchange electrons more easily.

At warm temperatures, molecules combine with each other more easily.

What is the difference between heat and temperature?

Temperature measures the motion of molecules, and heat is the energy of that motion.

Temperature is measured by a thermometer, and heat is measured by a barometer.

Heat is measured in calories, and temperature is measured in joules.

Heat is caused by the sun, and temperature is caused by conditions in the atmosphere.

What happens to molecules when the temperature reaches absolute zero?

All of their motion stops completely.

They move xo fast they can't be observed.

They form bonds with other, nearby molecules.

Why is there more heat in an iceberg than in a pot of boiling water?

Icebergs contain many more molecules than pots of water.

The pot insulates the heated molecules.

Most icebergs are fairly warm to the touch.

Water does not hold heat very well.

What happens inside a thermometer when the temperature goes up?

The heat causes the liquid to expand.

The heat causes the liquid to become denser.

The heat causes the liquid to float.

The heat boils the liquid into a gas.

Why does warm air rise?

Because it's less dense than cold air.

Because it's more massive than cold air.

Because it has a smaller volume than cold air.

Because it has more energy than cold air.

MS PS

Authored by Charles Martinez

Science

6th - 8th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the transfer of thermal energy through direct contact?

conduction

convection

radiation

insulation

MULTIPLE CHOICE QUESTION

1 min • 1 pt

convection

conduction

radiation

heat transfer

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MS PS

What is the transfer of thermal energy through direct contact?

How do you block the transfer of heat through conduction?

The total kinetic energy of the tiny particles that make up matter...

The transfer of thermal energy that occurs in currents of gas or liquids...

The average kinetic energy of all the particles in al material.

Caused by temperature differences between two parts.

The transfer of thermal energy through empty space

Distinct forms of matter, also called phases are ___.

___ is required to make change happen in a system.

A group of interacting or interdependent elements forming a complex whole is a(n) ___.

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