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This activity will help students understand weight, mass and gravity.
Earths gravity pulls everything towards its center. Gravity gives objects their weight. The weight of an object is a measure of the pull of gravity on that object. Matter is anything that takes up space and has weight. Mass is the amount of matter something has. Weight is the pull of gravity on the mass. More mass means more weight, because theres more for gravity to pull on.
1. Use Science Process and Thinking Skills
2. Manifest Scientific Attitudes and Interests
3. Understand Science Concepts and Principles
4. Communicate Effectively Using Science Language and Reasoning
Invitation to Learn
Race with Gravity (to be done with a partner)
Ask your partner to hold the ruler, hanging down (with 1 on the bottom and 12 on the top), just above your outstretched hand. When your partner releases the ruler, try to catch the ruler as quickly as you can. (By the time the message has traveled from your brain to your hand, gravity has already begun to pull the ruler down). Have a contest to see who in the class is the quickest to respond.
Prior to the activity, place one cup of various objects into individual Ziploc bags. Paper punch a hole in the top corner of each Ziploc bag.
Race With Gravity
Have the students share this activity and the scientific principle involved at home with family.
A Homemade Scale
Use a cup in place of the toilet paper tube and 2 square of paper.