Up in the Air! Miss Laverty February 14 th, 2012 PowerPoint presentation and lesson adapted from the Edmonton Public Schools Curriculum Book

Welcome 1)If you remembered your FOIP sheet, please hand it in the bin and grab a treat! 2)Grab a copy of today’s handout on the desk 3)Fill in the KNOW section of your KWL chart about air

Mystery Box…

Mystery Box Work in partners to fill in your observations and answer the questions on the “mystery bag” work sheet Add to your KWL chart

“Balancing Act”

Question Does an inflated balloon weigh more than a deflated one?

Materials 2 balloons (same size) 1 bamboo stick Ruler Tape String

Procedure (6) 1)Use the ruler to find the center of stick 2)Tie one end of string to center of stick 3)Tape one balloon on each end of the stick 4)Remove one of the balloons, inflate and tie it 5)Attach inflated balloon back to the end of the stick 6)Observe and record results

Hypothesis If _____________ happens then I think that _____________ will happen. Example: If one balloon is deflated then I think that the inflated balloon will _______ (rise or fall)

Hypothesis Divide… Inflated balloon will rise Scale will stay balanced Inflated balloon will lower

Variables Controlled variables: size and position of balloons Manipulated variable: Air in balloon Responding variable : The way the stick tilts

Diagram Bamboo Stick String

Results The deflated balloon rose and the inflated balloon lowered.

Inferences The an inflated balloon weighs more than a deflated balloon Therefore, air must have mass

Vocabulary Words Air: an invisible mixture of gases which make up the earth’s atmosphere Mass: The amount of matter in an object