WorksheetsEnergetic Connections
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Choose the BEST answer that is an example of an energy transformation from potential energy to kinetic energy.
a)
a. a ball rolling down a ramp
b)
b. a picture hanging on the wall
c)
c. a swing swaying back and forth
2.
Eddie spilled grape juice on a favorite shirt. His mom said to take two tablespoons of the powdered laundry detergent and mix it with 2 oz. of water and then scrub the spot with the soap solution. He mixed the detergent and water, then rubbed the solution into the spot. He noticed that the detergent and water solution began to get very warm. He told his mom that an energy transfer occurred when he mixed the detergent and water. Choose the BEST evidence that led Eddie to conclude that an energy transfer occurred.
a)
The mixing of substances is evidence of an energy transfer.
b)
The change in temperature is evidence of an energy transfer.
c)
The presence of bubbles is evidence of an energy transfe
3.
Which energy transfer occurred when Cory mixed the detergent with water?
a)
Kinetic energy transferred to potential energy.
b)
Heat energy transferred to a chemical energy.
c)
Chemical energy transferred to heat energy.
4.
Heat energy transfer is:
a)
the radiation of heat from an object.
b)
the transfer of heat from one object to another
c)
a loss of heat energy.
5.
Which statement describes the motion and arrangement of molecules during a change from a solid to a liquid?
a)
There is no change in the motion of the molecules in a solid when changing to
a liquid.
b)
The molecules speed up in a solid, break apart, and join other molecules to
change to a liquid.
c)
The molecules in a solid speed up and move about more freely to change to a
liquid.
6.
Choose the BEST example of convection:
a)
Heat leaves the hot soup and heats the spoon.
b)
Heat leaves a coffee cup as the currents of steam and air rise.
c)
Water droplets form on the outside of a glass of water.
7.
Jan and Kyle were asked to design an investigation that answered the question, “What changes occur when you combine baking soda and vinegar?” Jan’s hypothesis stated that there would be a chemical change. Kyle’s hypothesis stated that there would be a physical change. After completing their procedure, Jan and Kyle observed that mixing the two compounds created bubbling and a gas was released, a clear liquid remained, and a white powder remained. Choose the BEST conclusion based on Jan and Kyle’s observations.
a)
A physical change occurred when vinegar and baking soda were combined.
b)
A chemical change occurred when vinegar and baking soda were combined.
c)
Water and salt were produced when the vinegar and baking soda were combined.
8.
Which of the following is an example of potential energy?
a)
a stretched rubber band
b)
a ball rolling down a ramp
c)
a snail moving across a rock
9.
Tony and Carlos wanted to find out if the mass of water changed during a phase change from solid to liquid and liquid to solid. They conducted an investigation to find out if mass of water changes during a phase change. They placed an ice cube in a closed container, measured the mass of the ice cube in its solid state, and then measured the mass of the water in its liquid state. They recorded their results in the data table below: What can Tony and Carlos conclude from their investigation?
Mass of ice cube solid= 100 grams
Mass of melted cube liquid= 100 grams
Mass of ice cube solid= 100 grams
Mass of melted cube liquid= 100 grams
a)
The mass of water stays the same during a phase change from a solid to a liquid.
b)
The volume changes from a solid to a liquid but the mass stays the same.
c)
The heat transfer from the warm air to the cold ice caused the ice to change from a solid to a liquid.
10.
Explain why it was necessary in Tony and Carlos’ investigation for them to place the ice cube in a closed container while it melted.
a)
To prevent the ice cube from moving around and losing volume.
b)
To maintain a constant temperature in the container.
c)
To prevent any water molecules from evaporating into the air.
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