amsti investigations- variables flippers and catapults
TRANSCRIPT
Catapult
• A catapult is a lever arm that is loaded with energy. When energy is released, any object resting at the end of the lever is hurled into the air.
Catapults made with items from around the house.
Experimenting IS Important in Science
• 1. An experiment compares 2 or more investigations in which ALL of the variables are CONTROLLED – except the variable that is being investigated.
• ? HOW did you control variables in the swinger investigation while you were testing?
Experimenting IS Important in Science
• 2. A controlled experiment is a series of experiments….where one variable is changed and all other variables are controlled.
• ? What series of experiments did you do to find out how many passengers lifeboats would hold?