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6th Grade Physical Science
Test Description: Potential & Kinetic Energy & Heat Energy
Instructions: Answer all questions to get your test result.
1) Which of the following is NOT an example of potential energy?
A
a toy car at the top of a ramp
B
Stretched rubber band
C
a ball about to roll down a hill
D
a rock on the sidewalk
2) A jar of vinegar and baking soda are sealed in a bigger jar. When it is shaken, the two small jars break and mix. What would be the reaction?
A
The mass is unaffected in a closed system.
B
The mass is unaffected because acid (vinegar) and baking soda do not react.
C
The mass decreased because of the reaction.
D
The mass has increased due to the reaction.
3) The gas stored in a fuel tank of a car represents what kind of energy?
A
Kinectic energy
B
Mechanical energy
C
Potential energy
D
Nuclear energy
4) Choose the best scientific explanation of how simple machines help perform work.
A
Simple machines run from computers and do not require energy.
B
Most simple machines are electric and do not use energy.
C
Workers have to be around to make sure the wheels and pulleys do not break down.
D
Simple machines use energy transfer and friction reduction to make work easier.
5) 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?
A
The water will boil and slowly disappear.
B
Nothing will happen as this is a closed system.
C
The bottle might explode or the cap will shoot off as the water begins to bubble.
D
The glass will melt before anything will happen with the water inside.
6) 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?
A
Elastic and potential energy
B
Gravitational and elastic energy
C
Kinetic and elastic energy
D
Kinetic and potential energy
7) 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?
A
Fast movement - no movement
B
Molecules always move at the same speed regardless of heat
C
Aligned free movement- faster movement- lined up & little movement
D
Molecules lined up & little movement- moving free & faster not aligned-back line up little movement
8) 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?
A
Molecules of water began to vibrate faster and condensed on her glasses.
B
Water vapor increased in temperature and melted into a liquid.
C
Heat energy transferred out of the water vapor that surrounded her glasses and water vapor condensed
D
Her glasses absorbed heat energy and liquid water became steam.
9) 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?
A
The molecules of ice cream began to melt.
B
The molecules of ice cream began to vibrate faster and freely and the solid became a liquid.
C
The ice cream molecules dissolved in the heat from the sun.
D
The molecules of ice cream began to vibrate slower and slip and slide past each other.
10) Thermal energy is another name for...
A
Heat
B
Magnetism
C
Movement
D
Energy
*select an answer for all questions
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