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
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
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