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Alex bought ice cream on a hot day. After minutes ice cream was running down the cone. Which best explains the physical changes of the ice cream?
Molecules lined up & little movement- moving free & faster not aligned-back line up little movement
The bottle might explode or the cap will shoot off as the water begins to bubble.
Kinetic and potential energy
The molecules of ice cream began to vibrate faster and freely and the solid became a liquid.
Potential energy
a rock on the sidewalk
Heat energy transferred out of the water vapor that surrounded her glasses and water vapor condensed
Simple machines use energy transfer and friction reduction to make work easier.
The gas stored in a fuel tank of a car represents what kind of energy?
Molecules lined up & little movement- moving free & faster not aligned-back line up little movement
The bottle might explode or the cap will shoot off as the water begins to bubble.
Kinetic and potential energy
The molecules of ice cream began to vibrate faster and freely and the solid became a liquid.
Potential energy
a rock on the sidewalk
Heat energy transferred out of the water vapor that surrounded her glasses and water vapor condensed
Simple machines use energy transfer and friction reduction to make work easier.
Choose the best scientific explanation of how simple machines help perform work.
Molecules lined up & little movement- moving free & faster not aligned-back line up little movement
The bottle might explode or the cap will shoot off as the water begins to bubble.
Kinetic and potential energy
The molecules of ice cream began to vibrate faster and freely and the solid became a liquid.
Potential energy
a rock on the sidewalk
Heat energy transferred out of the water vapor that surrounded her glasses and water vapor condensed
Simple machines use energy transfer and friction reduction to make work easier.
A roller-coaster car running up and down the hills on a track is an example of the continous transformation between which two forms of energy?
Molecules lined up & little movement- moving free & faster not aligned-back line up little movement
The bottle might explode or the cap will shoot off as the water begins to bubble.
Kinetic and potential energy
The molecules of ice cream began to vibrate faster and freely and the solid became a liquid.
Potential energy
a rock on the sidewalk
Heat energy transferred out of the water vapor that surrounded her glasses and water vapor condensed
Simple machines use energy transfer and friction reduction to make work easier.
A glass bottle has 500 ml of water and is capped and put over a lit candle. The molecules heat and move quickly. If the bottle is left over the heat for a long time what happens?
Molecules lined up & little movement- moving free & faster not aligned-back line up little movement
The bottle might explode or the cap will shoot off as the water begins to bubble.
Kinetic and potential energy
The molecules of ice cream began to vibrate faster and freely and the solid became a liquid.
Potential energy
a rock on the sidewalk
Heat energy transferred out of the water vapor that surrounded her glasses and water vapor condensed
Simple machines use energy transfer and friction reduction to make work easier.
A candle drips off a candle and forms a puddle. The wax hardens. Which describes the changes in the movement of the molecules of the candle wax as it is lit and then puddles?
Molecules lined up & little movement- moving free & faster not aligned-back line up little movement
The bottle might explode or the cap will shoot off as the water begins to bubble.
Kinetic and potential energy
The molecules of ice cream began to vibrate faster and freely and the solid became a liquid.
Potential energy
a rock on the sidewalk
Heat energy transferred out of the water vapor that surrounded her glasses and water vapor condensed
Simple machines use energy transfer and friction reduction to make work easier.
Which of the following is NOT an example of potential energy?
Molecules lined up & little movement- moving free & faster not aligned-back line up little movement
The bottle might explode or the cap will shoot off as the water begins to bubble.
Kinetic and potential energy
The molecules of ice cream began to vibrate faster and freely and the solid became a liquid.
Potential energy
a rock on the sidewalk
Heat energy transferred out of the water vapor that surrounded her glasses and water vapor condensed
Simple machines use energy transfer and friction reduction to make work easier.
In January the temperature was -5 degrees Celsius. If you walk outside wearing glasses and then went in a warm building, why would your glasses fog up?
Molecules lined up & little movement- moving free & faster not aligned-back line up little movement
The bottle might explode or the cap will shoot off as the water begins to bubble.
Kinetic and potential energy
The molecules of ice cream began to vibrate faster and freely and the solid became a liquid.
Potential energy
a rock on the sidewalk
Heat energy transferred out of the water vapor that surrounded her glasses and water vapor condensed
Simple machines use energy transfer and friction reduction to make work easier.
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