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This Experiment determines whether Heavy or Light Objects Fall Faster

Subject:

Science  

Grades:

6, 7, 8  

 

Title – DROP DRILL
By – Judy Schneider
Primary Subject – Science
Secondary Subjects – Science
Grade Level – 6 – 8 (adaptable)
SCIENCE PROJECT OF THE WEEK

DROP DRILL

PROBLEM: Do heavy or light objects fall faster?

RESEARCH: Look up gravity in a science textbook or encyclopedia. Write two or three paragraphs about what you learned. Be sure your research includes information about the following questions:
1. What is gravity? 2. Why does it cause objects to fall towards Earth? 3. What is mass?

HYPOTHESIS: Based on your research, do you think the heavy objects or the light objects will fall fastest?

MATERIALS:
Light Objects
          Empty soda can
          Dry sponge
          Wadded paper
          Plastic fork
Heavy Objects
          Full soda can
          Wet sponge (fully soaked)
          Heavy book
          Metal fork

PROCEDURE:
1. Develop a step by step procedure to test your hypothesis. As part of your procedure, drop a heavy object and a light object at the same time. Find some control procedure that will insure that the objects will start dropping at the same time. It will not be good enough to just release them from your hand each time. You must write the steps of your procedure.
2. Observe which object hits the floor first. This step requires two people, since the person who drops the objects cannot accurately observe the objects hitting the ground.
3. Repeat your procedure and step 2 for each pair of light and heavy objects. If you cannot find the objects listed above, you can use other objects. Make sure that you list them in the materials.
4. Enrichment: Do the same experiment with two items that weight the same. For example, use a flat piece of paper and one that has been crumpled up.
5. Enrichment: Use a fan to create a wind. Repeat your procedure to test the items you used before.

DATA: Make a data table to record your observations. Below is an example for you to follow. Your data will not be exactly the same.

LIGHT OBJECT          HEAVY OBJECT          RESULTS
Empty soda can          Full soda can          Upon releasing both cans…

Dry sponge          Wet sponge

QUESTIONS:
1. Discuss your results. Were all the results the same or were there differences? If there were differences, what might have caused the differences? Did a light or heavy object fall faster? Remember that you must answer the question from the original PROBLEM STATEMENT.
2. Did the results you got match your hypothesis?
3. What have you learned about the force of gravity? Is it stronger on heavy objects or is its force equal on all objects?
4. What have you learned from this experiment?

CONCLUSION:          This is not optional. You must explain what you learned by doing this activity.
Remember that you must answer the questions from the original PROBLEM STATEMENT.

NOTE: BE SURE TO HAVE YOUR PARENT OR GUARDIAN SIGNS YOUR WORK. PARENTS: YOUR SIGNATURE SHOWS YOUR STUDENT HAS DONE THE WORK

TEACHER SECTION:
POSSIBLE HYPOTHESIS: The heavy and light objects will hit the floor at the same time. OR The heavy object will hit the floor first. OR The light object will hit the floor first.

POSSIBLE CONCLUSION: Since the pull of gravity is the same for all objects, the objects hit the ground at the same time (assuming the method of release is consistent for both objects)

E-Mail Judy Schneider !

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