Energy Transfer & Transformations

(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.

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NGSS.MS-PS3-5

(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

(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.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

(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-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

(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-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

(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.

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NGSS.MS-PS1-4

NGSS.MS-PS3-3

(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-PS3-4

NGSS.MS-PS3-5

(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?

• object 4 at 44 °C
• object 5 at 40 °C
• object 2 at 48 °C
• object 3 at 46 °C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

(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.11.4) 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?

• thermal insulation
• thermal convection
• thermal conduction
• thermal radiation