What is KINETIC ENERGY?

when something stays mostly the same over time

a measure of how hot or cold something is

What does STABILITY mean?

when something stays mostly the same over time

a measure of how hot or cold something is

a heating unit that stores and warms water

In some places, hot water from underground can shoot up into the air through a hole in the ground. When this happens, the ground surrounding the water increases in temperature. What happens to the molecules in the ground when the temperature of the ground increases?

The energy of the molecules in the ground increases.

The energy of the molecules in the ground decreases.

The cold energy of the molecules in the ground decreases.

More heat molecules combine with the molecules in the ground.

A space shuttle is covered with two layers of carbon. The two layers are the same size and have the same number of molecules. When the space shuttle is sitting on the ground, the layers do not touch, as shown in the diagram above. When the space shuttle takes off, the layers move so that they are touching. Use the information in the diagram to answer the question. How does the temperature of the outer layer compare with the temperature of the inner layer before the layers touch? What will happen after the layers have been touching for a while?

Before the layers touch, the outer layer is hotter than the inner layer. Once the layers are touching, the outer layer will transfer kinetic energy to the molecules in the cooler inner layer until both layers reach the same temperature, which will be in between their starting temperatures.

Before the layers touch, the outer layer is hotter than the inner layer. Once the layers are touching, the cooler inner layer will gain kinetic energy until the molecules of both layers have an energy of 90, because hotter things increase the temperature of cooler things.

Before the layers touch, the outer layer is cooler than the inner layer. Once the layers are touching, the inner layer will transfer kinetic energy to the molecules in the cooler outer layer until both layers reach the same temperature, which will be in between their starting temperatures.

Before the layers touch, the layers are different temperatures. Once the layers are touching, kinetic energy and cold energy will transfer between the molecules in the two layers until both layers reach the same temperature, which will be in between their starting temperatures.

Louis has two sets of two gears (Set A and Set B) that he is using to build two different machines. He has all the gears laying out separately, as shown in the diagram above. Then he puts the gears into the machines so that the gears in Set A are touching each other and the gears in Set B are touching each other. Use the information in the diagram to answer the question. After the gears have been touching for a while, which of the two bottom gears will be cooler, and why?

The larger bottom gear will be cooler than the smaller bottom gear, because the energy that transferred to it was spread out over more molecules.

The smaller bottom gear will be cooler than the larger bottom gear, because less energy has to transfer for the molecules to reach the same temperature as the molecules of the top gear.

The larger bottom gear will be cooler than the smaller bottom gear. It started with more total energy, so less energy had to transfer for both gears in Set B to reach the same total energy.

Both gears will be the same temperature, because both of the top gears had the same amount of energy to transfer and the molecules in the bottom gears start with the same energy.

Lin cooked a pot of soup, then put half the soup in the freezer for a while. Now the soup in the pot is hot, and the soup in the freezer is cold. What is the difference between the molecules of the soup in the pot and the molecules of the soup in the freezer?

The molecules of the soup in the pot are moving faster than the molecules of the soup in the freezer.

The molecules of the soup in the pot are moving and the molecules of the soup in the freezer are not moving.

There is no difference because all of the soup is made of the same type of molecules.

The molecules of the soup in the freezer are smaller than the molecules of the soup in the pot.

Engineers design computers to cool down quickly so they do not break. What happens to the molecules in a computer when the temperature of the computer decreases?

The energy of the molecules in the computer decreases.

The energy of the molecules in the computer increases.

The cold energy of the molecules in the computer increases.

The computer loses heat molecules.

A plumber is going to put two pipes in a wall, one in front and one in back. The pipes will be touching once they are installed. Both pipes are the same size and have the same number of molecules. The diagram above shows the pipes now, before they have touched. Use the information in the diagram to answer the question. How does the temperature of the front pipe compare with the temperature of the back pipe before the pipes touch? What will happen after the pipes have been touching for a while?

Before the pipes touch, the front pipe is hotter than the back pipe. Once the pipes are touching, the front pipe will transfer kinetic energy to the molecules in the cooler back pipe until both pipes reach the same temperature, which will be in between their starting temperatures.

Before the pipes touch, the front pipe is cooler than the back pipe. Once the pipes are touching, the back pipe will transfer kinetic energy to the molecules in the cooler front pipe until both pipes reach the same temperature, which will be in between their starting temperatures.

Before the pipes touch, the two pipes are different temperatures. Once the pipes are touching, the kinetic energy and cold energy will transfer between the molecules in the two pipes until both pipes reach the same temperature, which will be in between their starting temperatures.

Before the pipes touch, the front pipe is hotter than the back pipe. Once the pipes are touching, the cooler back pipe will gain kinetic energy until the molecules in both pipes have an energy of 100, because hotter things increase the temperature of cooler things.

A chef takes four pans from different parts of her kitchen and puts them in two stacks. The diagram above shows the pans before they touch each other. Use the information in the diagram to answer the question. After the pans have been touching for a while, which of the two bottom pans will be cooler, and why?

The larger bottom pan will be cooler than the smaller bottom pan, because the energy that transferred to it will have spread out over more molecules.

The larger bottom pan will be cooler than the smaller bottom pan. It started with more total energy, so less energy had to transfer for both pans to reach the same total energy.

The smaller bottom pan will be cooler than the larger bottom pan, because less energy has to transfer for the molecules to reach the same temperature as the molecules of the top pan.

Both pans will be the same temperature because both of the top pans had the same amount of energy to transfer and the molecules in the bottom pans start with the same energy.

Joseph puts a piece of toast on a plate. The toast is hot from the toaster. When he puts the toast on the plate, the energy of the plate increases. What must be true of the energy of the toast?

Its energy decreases while the energy of the plate increases.

Its energy stays the same while the energy of the plate increases.

Its energy increases while the energy of the plate increases.

It is impossible to know without data on the number of molecules in each object.

Nistu is cooking rice in a pot. When she leaves the pot on the stove for a while, the temperature of the rice increases. What happens to the molecules of the rice when the temperature of the rice increases?

The energy of the molecules in the rice increases.

The cold energy of the molecules in the rice decreases.

The energy of the molecules in the rice decreases.

More heat molecules combine with the molecules in the rice.

Rico and Bree are camping and have potatoes wrapped in foil to eat. Bree put her potato in the campfire for a while, but Rico did not. Now Bree’s potato has a high temperature. What is the difference between the molecules of the two potatoes?

The molecules of Bree’s potato are moving faster than the molecules of Rico’s potato.

There is no difference because both potatoes are made of the same type of molecules.

The molecules of Rico’s potato are smaller than the molecules of Bree’s potato.

The molecules of Bree’s potato are moving and the molecules of Rico’s potato are not moving.

Lava is hot liquid rock. When lava flows over solid ground, the solid ground beneath it increases in temperature. What happens to the molecules in the solid ground when the temperature is increasing?

The energy of the molecules in the ground increases.

The energy of the molecules in the ground decreases.

The cold energy of the molecules in the ground decreases.

More heat molecules combine with the molecules in the ground.

Jason put an apple on top of an ice pack in his lunch bag. By lunchtime the temperature of his apple had decreased. What happened to the molecules in the apple when the temperature of the apple decreased?

The energy of the molecules in the apple decreased.

The cold energy of the molecules in the apple increased.

The energy of the molecules in the apple increased.

Geothermal power plants send water through pipes deep underground where it is hot. This causes the temperature of the water to increase. What happens to the molecules of the water when the temperature of the water increases?

The energy of the water molecules increases.

The energy of the water molecules decreases.

The cold energy of the water molecules decreases.

More heat molecules combine with the water molecules.

Maja puts a hockey puck onto ice. After a while the temperature of the hockey puck decreases. What happens to the molecules of the hockey puck when the temperature of the puck decreasess?

The energy of the molecules in the hockey puck decreases.

The hockey puck loses heat molecules.

The energy of the molecules in the hockey puck increases.

The cold energy of the molecules in the hockey puck increases.

Openscied Thermal Energy Final

Authored by Charles Martinez

Science

6th Grade

NGSS covered

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29 questions

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MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What does AVERAGE mean?

the moment when two objects hit each other

a balanced state in which a system is stable, such as when two or more samples are at the same temperature

a number that summarizes a set of data and that can be computed by adding all the numbers in a list and then dividing by the number of numbers in the list

to reach a conclusion using evidence and reasoning

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What does CHANGE mean?

tiny organisms that are made of a single cell

to reach a conclusion using evidence and reasoning

the energy that an object has because it is moving

when something becomes different over time

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What does COLLISION mean?

the ability to make things move or change

anything that has mass and takes up space

the moment when two objects hit each other

a small part that is meant to show what the whole is like

Tags

NGSS.MS-PS2-1

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is ENERGY?

the ability to make things move or change

the energy that an object has because it is moving

a small part that is meant to show what the whole is like

to move from one object to another or one place to another

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is EQUILIBRIUM?

the moment when two objects hit each other

when something becomes different over time

to reach a conclusion using evidence and reasoning

a balanced state in which a system is stable, such as when two or more samples are at the same temperature

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is GROUNDWATER?

the ability to make things move or change

a group of atoms joined together in a particular way

water that is underground

a set of interacting parts forming a complex whole

Tags

NGSS.MS-ESS2-4

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What does INFER mean?

to reach a conclusion using evidence and reasoning

the energy that an object has because it is moving

anything that has mass and takes up space

a group of atoms joined together in a particular way

Tags

NGSS.MS-LS2-4

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Openscied Thermal Energy Final

What does AVERAGE mean?

What does CHANGE mean?

What does COLLISION mean?

What is ENERGY?

What is EQUILIBRIUM?

What is GROUNDWATER?

What does INFER mean?

What is KINETIC ENERGY?

What is MATTER?

What is a MOLECULE?

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