Marlee is wrapping her lunch in aluminum foil. Why is aluminum foil considered both a good heat conductor and a reflective insulator?

It conducts heat and reflects radiation

When Bluey places a hot cup of coffee in the refrigerator, what happens to the kinetic energy of the coffee molecules?

The kinetic energy remains constant

What does the term "thermal equilibrium" mean?

When two objects reach the same temperature and heat no longer flows between them

When an object reaches its highest possible temperature

When heat flows from a cooler object to a warmer one

When an object's temperature decreases to match its surroundings

Huckleberry drops two pieces of ice on the floor, and they begin to melt. One is 3 grams and the other is 5 grams. What is he likely to observe?

The two pieces of ice will melt at the same temperature, but the 3-gram piece of ice will melt in less time.

The 3-gram piece of ice will melt at a lower temperature and it will take less time to melt.

The two pieces of ice will melt in the same amount of time.

The 5-gram piece of ice will melt at a higher temperature and it will take longer to melt.

The device shown is designed to heat the air in a room. A fan helps draw air up from the floor, so it will receive heat from the warm metal parts of the heater. Inside the heater, electric current passes through metal and is transformed into thermal energy. One advantage of some radiators is that they have wheels, making it portable. What is the advantage of designing the heater so it does its job on the floor, as opposed to near the ceiling?

Having the heating low to the ground increases the effect of convection, because cold air sinks and will be heated more easily if the heater is at the same level as the coldest air in the room. The heated air will rise and be distributed throughout the space.

Floors tend to be cold because heat rises. Having the heater on the floor will allow the floor to be warmed by conduction.

Radiation works best from the ground up, as heat rises. If the heater were off the ground only the upper part of the room would be heated through radiation.

Conduction works much better near the ground because that is where the colder air is, and the heater will only transfer heat to the air if the air is significantly colder than the heater.

Isla and Oliver are learning about energy conservation in their science class. They understand that resources need to be conserved, like turning off the water while brushing teeth. Energy within a system follows the Law of Conservation of Energy, so what does the Law of Conservation of Energy mean?

Energy cannot be destroyed or created.

Energy cannot be transferred or used up.

Energy can be transformed and destroyed.

Ms. Webber likes to attend football games, no matter how cold the weather becomes. She is going to a game on a very cold day and takes along a hand warmer. She activates it and tucks it into the glove she is wearing. She holds her hands together, and before long, her hands are warm. Which best describes how her hands are warm?

Heat was transferred by conduction, resulting in an increase in kinetic energy.

Heat was transformed by convection, resulting in the conservation of energy.

Thermal energy was transferred by currents, resulting in an increase in kinetic energy.

Heat was transformed by radiation, resulting in an increase in kinetic energy.

Lucy is planning an investigation to determine how materials respond to changes in temperature. She observes how the front door at school, which has a metal door, behaves in different temperatures. She records her data, as shown. Outside Temperature ---- Door Behavior 95°F Door sticks, difficult to close 23°F Door does not stick, swings open easily What can Lucy conclude about the difference in the behavior of the door when the weather is hot compared to when it is cold?

The metal in the door experiences thermal expansion when the weather is hot due to an increase in kinetic energy of the particles in the metal. When it is cold, the metal contracts.

The metal in the door experiences thermal expansion when the weather is hot due to a decrease in kinetic energy of the particles in the metal. When it is cold, the metal contracts.

The metal in the door experiences thermal contraction when the weather is hot due to an increase in kinetic energy of the particles in the metal. When it is cold, the metal expands.

The metal in the door experiences thermal contraction when the weather is hot due to a decrease in kinetic energy of the particles in the metal. When it is cold, the metal expands.

Unit 2: Thermal Energy and Heat Transfer Test

Authored by Blaire Webber

Science

6th Grade

NGSS covered

Used 5+ times

Unit 2: Thermal Energy and Heat Transfer Test

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34 questions

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MULTIPLE CHOICE QUESTION

10 mins • 3 pts

Ms. Webber forgot her insulated travel mug and brought a regular coffee mug to school. She misplaces her mug and decides to reheat her coffee during Block 2. Explain what happens to the molecules of the coffee when they are heated.

The molecules move slower and get closer together.

The molecules move faster and get farther apart.

The molecules stop moving completely.

The molecules change into a different substance.

Tags

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

10 mins • 3 pts

You injure your ankle playing football at recess and ask the nurse for an ice pack. If you place the ice pack on your ankle, how does the temperature of your ankle change and why?

The temperature increases as thermal energy moves from the ice pack to your ankle.

The temperature decreases as thermal energy moves from your ankle to the ice pack.

The temperature stays the same because no energy is transferred.

The temperature increases because the ice pack adds heat.

Tags

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

10 mins • 3 pts

What is the total kinetic and potential energy of all the particles in an object called?

Temperature

Heat

Thermal Energy

Thermometer

Tags

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

10 mins • 3 pts

During a science experiment, Luna measures the kinetic energy of the particles in a cup of water. What is she measuring?

Heat

Temperature

Thermal Energy

Thermometer

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

10 mins • 3 pts

Aria noticed that when she rubs her hands together, they become warm. What is a form of energy that is caused by movement of atoms and molecules in a substance?

Temperature

Thermometer

Heat

Thermal Energy

Tags

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

10 mins • 3 pts

What is the tool used to measure the average kinetic energy of a substance’s molecules?

Heat

Temperature

Thermometer

Thermal Energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

10 mins • 3 pts

Emma is learning about how energy from the Sun reaches Earth. By which method does this energy transfer occur?

Conduction

Convection

Radiation

Evaporation

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Unit 2: Thermal Energy and Heat Transfer Test

Ms. Webber forgot her insulated travel mug and brought a regular coffee mug to school. She misplaces her mug and decides to reheat her coffee during Block 2. Explain what happens to the molecules of the coffee when they are heated.

You injure your ankle playing football at recess and ask the nurse for an ice pack. If you place the ice pack on your ankle, how does the temperature of your ankle change and why?

What is the total kinetic and potential energy of all the particles in an object called?

During a science experiment, Luna measures the kinetic energy of the particles in a cup of water. What is she measuring?

Aria noticed that when she rubs her hands together, they become warm. What is a form of energy that is caused by movement of atoms and molecules in a substance?

What is the tool used to measure the average kinetic energy of a substance’s molecules?

Emma is learning about how energy from the Sun reaches Earth. By which method does this energy transfer occur?

You boil water to make Ramen Noodles for dinner. Boiling water in the pot warms a spoon inside the pot through which method?

A fire in a fireplace warms the air in a room through which method?

Pop corn is heated in a microwave oven through which method?

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