Unit 1: Thermal Energy Study Guide

Which of the following is one thing Jeff should do to improve his model?

What evidence supports your answer to this question?

• Make the arrows vibrate on each particle of the dry ice

  Evidence: The particles in a solid have LESS kinetic energy than the particles in a gas

• Make the arrows shorter on each particle of the carbon dioxide

• Make the arrows longer on each particle of the dry ice

• Remove the arrows from each particle of the carbon dioxide gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The students observed that the smaller ice cubes in the ice bath 2 melted faster than the larger ice block in ice bath 1. Based on the ice bath setup in figure 1, which statement best explains why several smaller ice cubes melt faster than a larger block of ice?

• Smaller ice have more surface area in contact with the liquid water, so more thermal energy is transferred from the ice to the water

• A larger ice block has more surface area in contact with the liquid water, so less thermal energy is transferred from the water to ice

• A larger ice block has more surface area and contact with the liquid water, so less thermal energy is transferred from the ice to the water

• smaller ice cubes have more surface area and contact with the liquid water, so more thermal energy is transferred from the water to the ice

Tags

NGSS.MS-PS3-4

During the ice bath experiment, the #1 was the independent variable and the #2 was the dependent variable. The #3 was held constant for both experiments.

• #1 - surface area of the ice

  #2 - time for the ice to melt

  #3 - mass of the ice

• #1 - time for the ice to melt

  #2 - surface area of the ice

  #3 - mass of the ice

• #1 - mass of the ice

  #2 - surface area of the ice

  #3 - time for the ice to melt

• #1 - surface area of the ice

  #2 - mass of the ice

  #3 - time for the ice to melt

The students want to collect data on how the average kinetic energy of the liquid water molecules and the ice baths changes during the experiment.

Which statement best describes a change to the ice bath experiment that will help the students collect this data?

• Measure the water temperature in each ice bath throughout the experiment and compare the initial and final water temperature

• Measure the water volume in each ice bath throughout the experiment and compare the initial and final water volumes

• Measure the water height in each ice bath throughout the experiment and compare the initial and final water heights

• Measure the size of each piece of ice in each ice bath throughout the experiment and compare the initial and final sizes of each piece of ice

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Look at the two beakers of water and their starting position below. How will the temperature of the water in the two beakers compare if an EQUAL amount of heat is absorbed by both beakers of water. Use the model to answer this question.

• The temperature of both beakers will decrease by the same amount

• The temperature of both beakers water will increase by the same amount

• The temperature of Beaker B's water will be above 75° C

• The temperature of Beaker A's water will remain 75° C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Examine the phase change diagram below, and answer the question it follows. Keisha has a bowl of ice. She places the ice in a warm room and watches as it melts into liquid water. Keisha then places the liquid water over a Bunsen burner and heats it until it vaporizes.

How does the temperature of the vaporized gas compare to the temperature of the solid ice that Keisha began with?

• The temperature of the vaporized gas is the same as the temperature of the solid ice

• The temperature of the vaporized gas is higher than the temperature of the solid ice

• The temperature difference cannot be determined because the phase changes are not related to temperature

• The temperature of the vaporized gas is lower than the temperature of the solid ice

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A student wants to conduct an investigation to compare how much thermal energy different substances can transfer. Before he begins the investigation, he wants to construct a data table he can use to collect his data. Which data table would be the best for his investigation?

• table one

• table two

• table three

• table four

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

A student puts an ice cube in an empty milk jug and places the cap on it. Throughout the day, the ice cube changes states. The picture shows how the ice cube changes.

Removing heat from gaseous water #1 the movement of the water particles. This causes the particles to #2 and become #3. Once enough heat has been removed from the water particles, the water #4.

• #1 - increases

  #2 - lose energy

  #3 - more densely packed

  #4 - changes to liquid state

• #1 - decreases

  #2 - lose energy

  #3 - more densely packed

  #4 - changes to liquid state

• #1 - increases

  #2 - gain energy

  #3 - less packed

  #4 - changes to liquid state

• #1 - decreases

  #2 - lose energy

  #3 - less packed

  #4 - changes to liquid state

Tags

NGSS.MS-PS1-4

Using the temperature conversion chart to help you, drag the particle model labels to the correct boxes to show how temperature affects the motion of particles in the ice bath experiment model.

• #1 - Particle Model Z

  #2 - Particle Model X

  #3 - Particle Model Y

  #4 - Particle Model Z

• #1 - Particle Model X

  #2 - Particle Model X

  #3 - Particle Model Y

  #4 - Particle Model Z

Tags

NGSS.MS-PS1-4

A student is running an experiment to measure how the pressure of a gas changes with temperature. The student will measure the pressure of the gas inside above for three different temperatures, as shown in the experiment set up.

Drag the correct pressure gauge label to the correct boxes to show how the motion of the gas particles at each temperature affects the pressure in the bulb. Each pressure gauge to label maybe use more than once.

• #1 - low pressure

  #2 - medium pressure

  #3 - high pressure

• #1 - high pressure

  #2 - low pressure

  #3 - medium pressure

Tags

NGSS.MS-PS1-4