Penny Lab

Which hypothesis is correct for the Penny Lab?

• If I put drops of water on a penny, then the head side will hold 20 and the tail side will hold 30 drops.

• If I put drops of water on a penny, then the head side will hold 20 and the tail side will hold 30 drops because water has surface tension.

• If I put 10 drops of water on a penny, then it will have 10 drops on the head and tail side because water can hold it shape as drops.

Which of the following describes a clear steps for the penny lab?

• Put drops of water o a penny and do 3 trials and record the time

• Place the penny on a petri dish, starting with the head side, count the number of drops of water until it slides and do it 2 times more. Repeat the same steps for the tail side.

• Put drops of water on the head side, then count the number drops and record the data. Do the same for the tail side.

Does the graph has correct x and y variables?

• YES

• NO

Does the graph have correct labels for x and y axes?

• YES

• NO

Tags

NGSS.MS-PS3-1

Does the graph have a title?

• YES

• NO

Does the plotted points in the graph correct and complete?

• YES

• NO

Tags

NGSS.MS-PS3-1

Which of the following is correct format of a claim and answers the question "How many drops of water will fit on each side of the penny?"

• There are two sides of the penny

• The average number of drops on the tail side was 40 and the head was 45.

• There are 40 drops of water on the penny

• The tail side holds more water than the head side.

What is the primary scientific concept demonstrated in the Penny Lab?

• Surface tension of water

• Density of metals

• Evaporation rate of liquids

• Capillary action

Which of the following materials would most likely affect the outcome of the Penny Lab experiment?

• A rough surface penny

• A smooth surface penny

• A copper penny

• A zinc penny

In the Penny Lab, why does the water form a dome shape on the penny?

• Due to gravity

• Due to surface tension

• Due to air pressure

• Due to the penny's material