(SC.7.P.11.4) Energy as heat flows in predictable ways. What must be true for two objects to transfer heat by conduction?

Both objects must be in contact with one another.

There must be a third substance between the two objects that conducts heat.

There must be the movement of either a gas or liquid.

Both objects must have the same temperature.

(SC.7.P.11.1) Temperature changes may result from adding or removing heat from a system. Which of the following does temperature measure?

the average kinetic energy of the particles that make up the object

the energy transferred when an object changes state

the state of matter that makes up the object

the electrical energy that is present in the object

(SC.7.P.11.1) Adding or removing heat from a system may result in a temperature change. Which temperature change would indicate that energy as heat was transferred out of a system?

The temperature dropped by 1 °C.

The temperature increased by 5 °C.

The temperature increased from 30 °C to 40 °C.

The temperature remained unchanged.

(SC.7.P.11.1) Specific heat is the amount of energy needed to change the temperature of 1 kilogram (kg) of a substance by 1 °C. The unit of energy for this change is called the joule (J). The table below lists the specific heat in J/kg•°C of four different substances. Which of the following shows the correct order of substances from least to most energy required to change the temperature of the substances listed in the table above?

gold --> copper --> aluminum --> water

aluminum --> copper --> gold --> water

copper --> water --> aluminum --> gold

water --> aluminum --> copper --> gold

(SC.7.P.11.1) The graph below illustrates the changes in state of water at various temperatures over a period of time. Which of the following statements best summarizes the information shown on the above graph?

Water changes from a liquid to a solid at 0 ºC.

Water changes from a gas to a liquid at 0 ºC.

The temperature of water remains constant as energy is removed.

(SC.7.P.11.1) Alejandra performed an experiment where she placed a beaker of ice water in sunlight and measured the temperature over a period of 15 minutes. She prepared the bar graph shown below to illustrate the results of her experiment. What can Alejandra’s conclude from her experiment?

The sunlight transferred energy as heat to the ice water.

The ice water released energy as heat.

(SC.7.P.11.1) As energy is added or removed from a system, a change in temperature may result. Which of the following is the best explanation for the type of energy transfer that may occur between objects at different temperatures?

Heat energy will be transferred between objects at different temperatures.

Electrical energy will be transferred between objects at different temperatures.

Light energy will be transferred between objects at different temperatures.

Sound energy will be transferred between objects at different temperatures.

(SC.6.P.11.1) The drawing below shows three different positions of a skier as she descends a snow-packed hill. Which statement about the skier is correct?

The skier’s potential energy is higher at point B than at point C.

The skier’s kinetic energy is higher at point A than at point B

The skier’s kinetic energy is lower at point C than at point B.

The skier’s potential energy is lower at point A than at point C

(SC.6.P.11.1) Federica loves both science and baseball. When her father took her to a Tampa Bay Rays’ game at Tropicana Field, she observed many examples of energy and energy transformation during the game. Which of these statements describes an example of kinetic energy that Frederica saw during the game?

Frederica’s favorite player running in the outfield to make a spectacular catch.

Frederica’s favorite player sitting in the dugout.

Frederica’s favorite pitcher watching an outfielder catch a flyball.

Frederica’s favorite player standing at home plate ready to hit.

(SC.6.P.11.1) The drawing shows the cars of a roller coaster racing down the track. How does the law of conservation of energy best explain the energy of the cars on the track?

The potential energy of the cars is being transformed into kinetic energy.

The kinetic energy of the cars is being transformed into potential energy.

The cars have potential energy, but no kinetic energy.

The cars have kinetic energy, but no potential energy.

(SC.6.P.11.1) The illustration shows the path that a ball rolls, from left to right. Which statement would correctly describe the energy of the ball as it travels along the path?

The ball has the most kinetic energy at point C.

The ball has the least potential energy at point A.

The ball has the least kinetic energy at point D.

The ball has the most potential energy at point D.

(SC.6.P.11.1) Energy can occur in many forms. Which of the following statements about kinetic energy is correct?

Kinetic energy can be used to do work.

Kinetic energy depends upon the position and size of an object.

Kinetic energy is stored within an object.

Kinetic energy cannot be transformed into another form of energy.

(SC.6.P.11.1) Energy can be transformed from one type to another. In which of the following situations is kinetic energy transformed into potential energy?

when a ball is thrown straight up into the air

when a boulder rolls down a mountain

when a tree branch falls toward the ground

when a water tank ruptures and water flows out

(SC.6.P.11.1) Look closely at the illustration. According to the law of conservation of energy, what happened to the energy of the ball in the illustration?

Potential energy was transformed into kinetic energy.

The amount of total energy in the ball increased.

Both the potential energy and the kinetic energy remained unchanged.

The amount of total energy in the ball decreased.

(SC.6.P.11.1) Mechanical energy is defined as the sum of both the potential energy and the kinetic energy of an object. According to the law of conservation of energy, what happens to mechanical energy if the potential energy of an object decreases?

Mechanical energy remains unchanged.

(SC.6.P.11.1) The drawing shows a hydroelectric power plant near a dam. When a gate is opened, the river water flows into the power plant through a large pipe that runs through the dam. Which transformation of energy in a hydroelectric power plant is used to generate electric energy?

potential energy to kinetic energy as the water flows into the plant

kinetic energy to potential energy as the water level lowers behind the dam

potential energy to kinetic energy as the water level rises behind the dam

kinetic energy to potential energy as the water flows into the plant

(SC.7.P.11.3) As the cars of a rollercoaster race down a hill, energy transformations take place. Which of the following is true?

Some potential energy is transformed to kinetic energy and other forms of energy.

Some energy is destroyed as the car slows down.

Kinetic energy is stored in the cars as they move downhill.

The kinetic energy of the cars is equal to the potential energy of the cars.

(SC.7.P.11.3) The following equation illustrates the chemical reaction that occurs in a plant. water + carbon dioxide + light energy = sugar + oxygen Based on the law of conservation of energy, what happened to the light energy in the reaction?

It was converted into chemical energy stored in the sugar.

It was changed into oxygen gas.

(SC.7.P.11.3) The unit for energy is the joule (J). Anita and her brother Alberto pedal their bicycles up a hill. Suppose that Anita uses 100 J of energy going up the hill. When she stops pedaling and allows her bicycle to coast down the other side of the hill along side Alberto as shown in the illustration below, Anita's bicycle uses 80 J of kinetic energy and generates 20 J of thermal energy from friction. Given the energy transformations that occur with Anita and her bicycle, which of the following statements is true?

The law of conservation of energy was obeyed.

The law of conservation of energy does not apply when thermal energy is involved.

Energy was destroyed as the bicycle coasted.

Thermal energy was transformed into kinetic energy.

(SC.7.P.11.3) Energy may be transformed from one form to another. What happens during every transformation of energy?

All the forms of energy remained unchanged.

Potential energy changes to kinetic energy.

(SC.7.P.11.3) According to the law of conservation of energy, energy may be changed from one form to another but cannot created or destroyed. Which of the following processes best demonstrates this idea of conservation?

a person recycling various materials

a person cutting down trees in a forest

a person using a bulldozer to tear down a building

(SC.7.P.11.3) Energy cannot be created nor destroyed, only changed from one form to another. How does listening to music on a radio obey the law of conservation of energy?

Electrical energy is converted into other forms of energy, such as sound.

Electrical energy remains unchanged.

Sound energy is changed into potential energy.

Electrical energy is gradually destroyed as the radio plays.

(SC.7.P.11.3) Katrina tried to take pictures with her new digital camera but discovered that its batteries were dead. What happened to the batteries?

All the energy stored in the batteries had been transformed.

Kinetic energy had been changed into potential energy.

All their stored energy had been destroyed.

Only chemical energy remained stored in the batteries.

(SC.7.P.11.3) Larissa is a very energetic person and has a hard time sitting still in class. One time in math class, her teacher asked Larissa where she got all of her energy. Since Larissa had just studied energy in science class, she knew the correct answer. What answer did Larissa give her math teacher?

"I can get energy anywhere I want."

"I make energy whenever I need it."

(SC.7.P.11.3) The unit for energy is the joule (J). If the energy content of an object is 1,000 J, but then later it is found to be 900 J, what happened to 100 J of its energy?

The object transferred some of its energy to its surroundings.

The object absorbed additional energy from its surroundings.

(SC.7.P.11.2) Felicity depends on her electric alarm clock every morning to get up in time for school. What energy transformation happens in Felicity's alarm clock to wake her up in the morning?

electrical energy is converted to sound energy

electrical energy is converted to thermal energy

chemical energy is converted to kinetic energy

sound energy is converted to electrical energy

(SC.7.P.11.2) Sofia connected several light bulbs to a battery as shown in the illustration. After the lights bulbs were on for a few minutes, she placed her hand near one of the bulbs and discovered it was warm. What transformation of energy did Sofia observe?

electrical energy to thermal energy

light energy to electrical energy

electrical energy to light energy

(SC.7.P.11.2) Trucks, cars, and motorcycles, as shown in the illustrations below, depend on internal combustion engines to move. An internal combustion engine uses air to burn a fuel, such as gasoline, which in turn causes the parts in the engine to move. What energy transformation occurs in an internal combustion engine?

chemical energy to kinetic energy

electrical energy to chemical energy

thermal energy to electrical energy

kinetic energy to chemical energy

(SC.7.P.11.2) Anaya uses a rechargeable electric toothbrush to brush her teeth. As it is used, the energy stored in the battery is depleted to make the toothbrush operate. What happens when Anaya plugs her toothbrush into an electrical outlet to recharge?

Electrical energy is transformed to chemical energy.

Electrical energy is transformed to kinetic energy.

Chemical energy is transformed to sound energy.

Chemical energy is transformed to kinetic energy.

(SC.7.P.11.2) When you bend a glow stick, a small chamber inside breaks, releasing a substance that reacts with other substances inside the glow stick. The reaction that takes place causes the glow stick to glow. What energy transformation takes place when a glow stick is lit?

chemical energy to light energy

electrical energy to light energy

(SC.7.P.11.2) Some hydroelectric plants generate electricity from water flowing though a dam as illustrated. Also illustrated is a windmill, which can generate electricity from wind. What transformation of energy occurs in both a hydroelectric plant and a windmill?

kinetic energy to electrical energy

chemical energy to electrical energy

sound energy to electrical energy

light energy to electrical energy

(SC.7.P.11.2) Joshua wakes up in the morning for school when his mother turns on the light in his bedroom. His brother William wakes up only when he hears his alarm clock. Which of the following statements is correct?

William depends on electrical energy being transformed to sound energy to wake up.

Joshua depends on electrical energy being transformed to sound energy to wake up.

Joshua depends on electrical energy being transformed to thermal energy to wake up.

William depends on electrical energy being transformed to light energy to wake up.

Energy Transfer & Transformations

Authored by Z Cardinalz

Science

6th - 8th Grade

NGSS covered

Used 18+ times

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

(SC.7.P.11.2) What is true of energy?

Energy can be transformed into different forms.

Energy is easily created and destroyed

Energy is a measure of the position of an object.

Energy is a measure of the motion of an object.

Tags

NGSS.MS-PS3-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(SC.7.P.11.4) Melissa burned her hand when she touched a hot pan as illustrated below. What method of heat transfer was responsible for this accident?

thermal conduction

thermal insulation

thermal radiation

thermal convection

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(SC.7.P.11.4) Heat flows in predictable ways. A glass bottle of fruit juice was placed on ice. Which of the following will eventually happen?

The juice inside the bottle will eventually freeze.

The ice will become slightly colder.

The ice around the bottle will eventually melt.

The bottle will become warmer.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(SC.7.P.11.4) Look closely at the illustration below. Which of the following indicates the correct direction of the flow of energy as heat?

from the spoon to the steam

from the steam to the kettle

from the steam to the spoon

from the kettle to the stove

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

NGSS.MS-PS3-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(SC.7.P.11.4) Study the illustration below, which shows two substances at different temperatures. What will happen when the warmer object is dropped into the cooler liquid?

The object will get even warmer as heat flows into it from the liquid.

Both the object and the liquid will reach the same temperature as heat flows from the warmer object to the cooler liquid.

Both the object and the liquid will exchange heat so that they both reach the temperature of the object.

Both the object and the liquid will exchange heat so that they both reach the temperature of the water.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(SC.7.P.11.4) As a rule, what happens when energy as heat flows between two objects at different temperatures?

The temperature of the warmer object increases.

The temperature of the warmer object stays the same.

The temperature of the cooler object increases.

The temperature of the cooler object decreases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(SC.7.P.11.4) Energy as heat moves from warmer objects to cooler ones until they reach the same temperature. Why do ice cubes make a glass of water cooler?

Cold flows from the glass to the water.

Heat flows from the water to the ice.

Heat flows from the ice to the water.

Cold flows from the ice to the water.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

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Energy Transfer & Transformations

(SC.7.P.11.2) What is true of energy?

(SC.7.P.11.4) Melissa burned her hand when she touched a hot pan as illustrated below. What method of heat transfer was responsible for this accident?

(SC.7.P.11.4) Heat flows in predictable ways. A glass bottle of fruit juice was placed on ice. Which of the following will eventually happen?

(SC.7.P.11.4) Look closely at the illustration below. Which of the following indicates the correct direction of the flow of energy as heat?

(SC.7.P.11.4) Study the illustration below, which shows two substances at different temperatures. What will happen when the warmer object is dropped into the cooler liquid?

(SC.7.P.11.4) As a rule, what happens when energy as heat flows between two objects at different temperatures?

(SC.7.P.11.4) Energy as heat moves from warmer objects to cooler ones until they reach the same temperature. Why do ice cubes make a glass of water cooler?

(SC.7.P.11.4) Energy as heat flows in predictable ways. If object 1 has a temperature of 42 °C, to which of the following objects will it transfer heat?

(SC.7.P.11.4) Energy as heat flows in predictable ways. What must be true for two objects to transfer heat by conduction?

(SC.7.P.11.4) The transfer of energy as heat occurs all around us. In the illustration below, the sun is the source of energy. What method of heat transfer is best demonstrated in the illustration?

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