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Science ENERGY Chapter 20
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In your body ______ speed up the cell process.
Conductors Enzymes Insulators Chemical bonds
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In your body ______ speed up the cell process.
Conductors Enzymes Insulators Chemical bonds
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The motion of atoms in all directions in solids, liquids, and gases is called ______.
Radiation Convection Random motion magnetism
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The motion of atoms in all directions in solids, liquids, and gases is called ______.
Radiation Convection Random motion magnetism
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The spring inside a moving wind-up toy has ________.
Potential energy only Kinetic energy only Both potential and kinetic energy Neither potential nor kinetic energy
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The spring inside a moving wind-up toy has ________.
Potential energy only Kinetic energy only Both potential and kinetic energy Neither potential nor kinetic energy
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Radiation involves the transfer of energy by _______.
Particle collisions Waves Air flow Temperature differences
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Radiation involves the transfer of energy by _______.
Particle collisions Waves Air flow Temperature differences
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Cooking pans have handles made of materials that are ______ of heat.
Conductors Insulators Transformations transmitters
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Cooking pans have handles made of materials that are ______ of heat.
Conductors Insulators Transformations transmitters
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Heat is _______ by food as it cooks.
Absorbed Transferred Charged energized
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Heat is _______ by food as it cooks.
Absorbed Transferred Charged energized
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Which of the following statements describes the flow of heat?
Energy move from a warmer object to a cooler object Energy moves from a cooler object to a warmer object Energy move only between two warm objects Energy never moves through cooler objects
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Which of the following statements describes the flow of heat?
Energy move from a warmer object to a cooler object Energy moves from a cooler object to a warmer object Energy move only between two warm objects Energy never moves through cooler objects
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Which of the following is NOT a good conductor of heat?
Air Aluminum Cooper None of the above
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Which of the following is NOT a good conductor of heat?
Air Aluminum Cooper None of the above
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Which of the following is a heat transfer when particles move from one place to another
Conduction Convection Thermal reaction temperature
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Which of the following is a heat transfer when particles move from one place to another
Conduction Convection Thermal reaction temperature
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What causes an endothermic reaction in a cake?
Heat Flour Baking soda Baking powder
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What causes an endothermic reaction in a cake?
Heat Flour Baking soda Baking powder
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What is the freezing point on the Fahrenheit scale?
-20 0 12 32
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What is the freezing point on the Fahrenheit scale?
-20 0 12 32
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At 0 on the Celsius temperature scale, _________.
Water boils Water freezes All particle motion stops All chemical bonds are broken
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At 0 on the Celsius temperature scale, _________.
Water boils Water freezes All particle motion stops All chemical bonds are broken
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What type of energy is absorbed by food as it cooks?
Chemical energy Light energy Thermal energy Electric energy
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What type of energy is absorbed by food as it cooks?
Chemical energy Light energy Thermal energy Electric energy
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An example of heat transfer by convection is the _________.
Melting of ice Formation of air currents Formation of chemical bonds Heating of the ground by sunlight
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An example of heat transfer by convection is the _________.
Melting of ice Formation of air currents Formation of chemical bonds Heating of the ground by sunlight
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The total amount of energy in the universe ___________.
Is always increasing Remains the same Is always decreasing Varies from moment to moment
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The total amount of energy in the universe ___________.
Is always increasing Remains the same Is always decreasing Varies from moment to moment
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An example of exothermic reaction is __________.
Photosynthesis The boiling of water The explosion of dynamite The formation of water from oxygen and hydrogen
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An example of exothermic reaction is __________.
Photosynthesis The boiling of water The explosion of dynamite The formation of water from oxygen and hydrogen
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Which of the following scientists described the law of conservation of energy?
Celsius Joule Kelvin Fahrenheit
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Which of the following scientists described the law of conservation of energy?
Celsius Joule Kelvin Fahrenheit
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What increases as the speed of an object increases?
Kinetic energy Mass Nuclear energy Potential energy
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What increases as the speed of an object increases?
Kinetic energy Mass Nuclear energy Potential energy
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Which of the following kinds of chemical reactions absorb energy?
Exothermic Endothermic Catalysts thermals
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Which of the following kinds of chemical reactions absorb energy?
Exothermic Endothermic Catalysts thermals
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When would you have the most potential energy?
Walking up the hill Sitting at the top of the hill Running up the hill Sitting at the bottom of the hill
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When would you have the most potential energy?
Walking up the hill Sitting at the top of the hill Running up the hill Sitting at the bottom of the hill
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How is energy from the sun transferred to Earth?
Conduction Convection Radiation Insulation
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How is energy from the sun transferred to Earth?
Conduction Convection Radiation Insulation
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During an energy transfer, what happens to the total amount of energy?
It increases It decreases It stays the same It depends on the energy form being transferred
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During an energy transfer, what happens to the total amount of energy?
It increases It decreases It stays the same It depends on the energy form being transferred
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What happens if two objects at different temperatures are touching?
Heat moves from the warmer object Heat moves from the cooler object Heat moves to the warmer object No heat transfer takes place
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What happens if two objects at different temperatures are touching?
Heat moves from the warmer object Heat moves from the cooler object Heat moves to the warmer object No heat transfer takes place
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Which of the following correctly describes energy?
Energy can be created Energy can be destroyed Energy cannot change form Energy can cause change
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Which of the following correctly describes energy?
Energy can be created Energy can be destroyed Energy cannot change form Energy can cause change
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