Let it Shine and Take the plunge! Miss Laverty *Experiments, worksheet and PowerPoint adapted from the Edmonton Public curriculum book*

Welcome Back! 1)If you are one of the first few people, please hand out the workbooks 2)Grab today’s worksheet from the blue handout bin 3)Sit down and show me you are ready to “let it SHINE”

Let it SHINE

Question How does blowing air affect air pressure?

Hypothesis What is a hypothesis? I think that if we blow air towards the can then the candle will ____________(stay lit or go out) because________________________.

Materials Tin can, drinking straw, jar lid, candle, plasticine

Procedure: 1)Use the plasticine as a candle holder inside the jar lid 2)Place the can about 10 cm away from the candle holder 3)Light the candle 4)Predict what will happen if you point the straw at the front of the can and blow 5)Blow through the straw 6)Observe and record results

Diagram

Results The candle did not stay lit

Inferences Air is fluid, so it travels around the can to blow out the candle A fluid: is a substance that flows and takes on the shape of its container When air moves faster it has less air pressure The regular air pressure of the room forces the fast moving air around the can

Taking the Plunge

Challenge With your thumb over the nozzle, push the plunger of syringe all the way in

Materials Plastic syringe Your thumb

Procedure 1.Pull the plunger back 2.Place your thumb over the nozzle 3.Try to push the plunger all the way in 4.Observe and record results

Diagram

Questions What is the plunger pushing? – air Why is it difficult to push in? – It is hard to compress air What property of air? – Air is fluid (takes the shape of container) – Air can be compressed – Air exerts pressure Real life examples? – Air compressor (mechanic shop) – Nerf gun

Exit Pass Please complete the exit pass before we play “quiz and toss”

Quiz and Toss Teacher will ask a question If you know the answer raise your hand If you catch the ball answer the question When the teacher asks the next question pass the ball to someone with their hand raised