This is a Science Experiment – How many pennies can be added to a full glass of water?

Subject:

Science

6, 7, 8

Title – IS THE GLASS REALLY FULL?
By – Judy Schneider
Primary Subject – Science
Secondary Subjects – Science
SCIENCE PROJECT OF THE WEEK

IS THE GLASS REALLY FULL?

PROBLEM: How many pennies can be added to a glass that is already full?

RESEARCH: Look up surface tension in a science textbook. Write two or three paragraphs about surface tension.

HYPOTHESIS: Based on your research, do you think the glass will hold more pennies than you thought?

MATERIALS:
1 clear glass
water
40 to 50 pennies

PROCEDURE:
1. Fill a glass right to the top with water, until it will hold no more.
2. Start gently dropping coins into the water. HINT: It is best to hold the coins on edge and carefully slip them into the water.
3. keep adding coins until the water overflows.
4. Repeat the procedure two more times.
5. Enrichment: Add a drop of dish soap to the water. Repeat steps 1 through 4.

DATA: Make a chart to record the number of pennies you were able to add to the glass.

CONCLUSION: This is not optional. You must explain what you learned by doing this activity.