What will happen to the wax pellets on the wire and why?

They will soften and melt completely as the heat from the flame will be transferred to the wax pellets by conduction through the wire.

Which type of energy is used in a hair dryer to dry your hair?

thermal; because thermal energy is created when it is operated.

Which of the following actions could a person do to show how heat moves through conduction ? A camper melts some marshmallows by holding them over a campfire. A person uses an electric heater to warm up on a cold evening. A chef waits as pasta noodles rise and fall in a pot of boiling water. A farmer heats up a metal rod to use as a brand by placing it into a fire.

A farmer heats up a metal rod to use as a brand by placing it into a fire.

Which of the following is a reliable investigation to study how heat is transferred by conduction ? Investigating why the water in a pool heats up as the sun shines on it. Investigating why the upstairs of a house is warmer than the basement. Investigating why the handle of a pot will heat up as food is cooking over an open fire. Investigating why the bottom of a loaf of bread browns faster than the top of a loaf of bread as an oven temperature is increased.

Investigating why the handle of a pot will heat up as food is cooking over an open fire.

Which scenario would be a reasonable investigation of how thermal energy can be transferred by convection ? Options: Studying the transfer of heat by sticking a metal spoon into a cup of hot water to determine if the handle of the spoon will heat up or not., Studying the transfer of heat by taking the temperature of the air beside a fire and farther away from a fire to determine how far away the heat can be detected., Studying the transfer of heat by measuring the temperature of the water at the top of a body of water and at the bottom to determine which way the warm water will flow., Studying the transfer of heat by taking the temperature on the outside and the inside of a wooden door facing the sun to determine if the heat can move through the door.

Studying the transfer of heat by measuring the temperature of the water at the top of a body of water and at the bottom to determine which way the warm water will flow.

Which example BEST demonstrates the conversion of nuclear energy into electrical energy? Options: Friction of water molecules in a cloud causes a large buildup of electrons in one area. When the voltage is large enough, a lightning bolt occurs., In a hydro-electric dam, a large amount of water molecules flows downward from a water reservoir, turning turbines that generate electricity ., A fully charged battery is attached to a closed electrical circuit, causing electrons to flow through the circuit., A reactor generates heat by splitting uranium , creating steam that turns turbines to generate electricity .

A reactor generates heat by splitting uranium , creating steam that turns turbines to generate electricity .

Which of the following BEST describes the energy transformations that occur as wood burns in a fireplace? Transformation 1: Chemical energy is transformed into thermal energy. Transformation 2: Thermal energy is transformed into electromagnetic energy.

Chemical energy is transformed into thermal energy; Thermal energy is transformed into electromagnetic energy.

Which situation has the same type of energy transformation as those that Ashley observed in the briquettes? A candle burning at night, a person eating a hamburger, a laser pointer projecting red light, or plant leaves receiving sunlight?

A candle burning at night has the same kind of energy transformations.

Which of the following accurately explains the energy transformation that happens when a match is lit , and why? Options: Chemical energy is transformed to heat and light energy because the match head burns and changes color. Heat energy is transformed to electromagnetic and light energy because the match head burns and creates flames. Heat energy is transformed into light and chemical energy because the match head creates friction as it strikes the surface. Chemical energy is transformed into heat and potential energy because the match head particles begin to move more rapidly when burning.

Chemical energy is transformed to heat and light energy because the match head burns and changes color.

Which of the following correctly describes an energy transformation that can be observed in an everyday situation? Ice in soda glass melts when it is placed in sunlight on a window sill. Radiant energy from the sun is absorbed by the water molecules, which increases the speed that the molecules move. This is a transformation between light energy and kinetic energy.

Ice in soda glass melts when it is placed in sunlight on a window sill. Radiant energy from the sun is absorbed by the water molecules, which increases the speed that the molecules move. This is a transformation between light energy and kinetic energy.

Which of the following is the energy transformation that occurs when gasoline is burned to power a car? Heat energy to sound energy, Chemical energy to sound energy, Heat energy to mechanical energy, Chemical energy to mechanical energy

Chemical energy to mechanical energy

What is the expected result of the experiment where a small pan of cold water (T 2 ) is placed in a larger pan of hot water (T 1 )?

The hot water and the cold water will become warm because of the transfer of heat by conduction. Heat will then be transferred to the molecules of the cold water in the inner pan and throughout the cold water by convection.

Heat transfer occurs:

only from warm objects to colder ones

When you touch something that feels cold, what happens?

heat from your hand moves into the cold substance.

The temperature of a substance increases as___.

the average kinetic energy of its particles increases

While rubbing your hands together on a cold day, you use friction to transform

mechanical energy into thermal energy

You're holding hands with your best friend. Your friend's hands are REALLY warm and yours are really cold. After a few minutes, this has changed. How might you explain what happened?

The heat energy from your friend's hand transferred to your hand through conduction.

The Law of Conservation of Energy states:

Energy cannot be created or destroyed, it can only transformed.

Science Magnet Energy Unit Review Flashcards

Student preview

51 questions

Show all answers

1.

FLASHCARD QUESTION

Front

Which is NOT a type of energy? Options: radiant energy, thermal energy, cake energy, sound energy

Back

cake energy

2.

FLASHCARD QUESTION

Front

Which is the energy in motion?

Back

kinetic energy

3.

FLASHCARD QUESTION

Front

Which is the energy that is heat?

Back

thermal energy

4.

FLASHCARD QUESTION

Front

Which type of energy is this? Options: electrical energy, thermal energy, sound energy, chemical energy

Back

electrical energy

5.

FLASHCARD QUESTION

Front

Which type of energy is this? Options: electrical energy, thermal energy, sound energy, chemical energy

Back

chemical energy

6.

FLASHCARD QUESTION

Front

Which type of energy is this? Options: electrical energy, thermal energy, sound energy, chemical energy

Back

thermal energy

7.

FLASHCARD QUESTION

Front

Which type of energy is this? Options: electrical energy, thermal energy, sound energy, chemical energy

Back

sound energy

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