What is Echolocation? http://www.youtube.com/watch?v=bAvoz_ofoeo&feature=youtu.be http://www.batsaboutourtown.com/pages/BatSounds.htm What do bats sound like?
What did you learn? Draw pictures and write facts to show what you learned about bats and how they use echolocation. – Use your science notebook.
What do we know about echolocation? Bats are not actually blind “see” with sound – Make noise that bounces off objects and living things – Echo tells them how close and what shape Echolocation helps bats avoid obstacles and find food
Batty Groups Egyptian Fruit BatsLittle Brown BatsGhost Bats Bella Dean Sheryl Elijah Hailey Matt Kelsey Christopher Brady Amanda Joey Audrey Vampire BatsLesser Horseshoe BatsSpotted Bats Noah Sophie Olivia M. Owen W. Tommy Mary Hunter Kim Olivia H. Gavin Owen C. Katie
Part 1: You as an Insect Pretend the motion sensor is a bat hanging from a branch and you are the insect it wants to eat. Collect several runs of data to learn what the bat “sees” when you (the insect) do different things.
Part 1: You as an Insect 1.Standing still at.5 and 2 meters 2.Walking slowly and quickly away from bat 3.Walking slowly and quickly toward the bat 4.Jumping up and down in front of the bat 5.Analyze your data. 6.Experiment with other motions.
Part 2: Following Path of Other Insects Open files and see the path of other insects that flew in front of the bat and were able to escape Stay away from the bat by trying to follow their path (and make the same graph line) Write directions to create graph line
Part 2: Following Path of Other Insects 1.Insect 1 – Fill in blanks for directions to match flight – Try to follow path – Reflect on success of directions 2.Insect 2 – Write directions to match the flight path – Try to follow path – Reflect on success of directions 3.Analyze your data. 4.Construct echolocation poster.
White cane helps people feel for and avoid obstacles – Far from perfect Added special handle with transmitters Ultrasound signals bounce off objects and echo back to cane – Turned into vibration felt with hand – Brain makes mental map
The Boy that Sees with Sound Video – http://scienceblogs.com/neuro philosophy/2011/05/25/human -echolocation-activates- visual-parts-of-the-brain/ http://scienceblogs.com/neuro philosophy/2011/05/25/human -echolocation-activates- visual-parts-of-the-brain/ Article – http://www.people.com/peopl e/article/0,,1212568_1,00.html http://www.people.com/peopl e/article/0,,1212568_1,00.html
Recommended Websites Bat Conservation International – http://www.batcon.org/index.php/all-about-bats/kidz-cave.html http://www.batcon.org/index.php/all-about-bats/kidz-cave.html Discovery Kids – http://kids.discovery.com/tell-me/halloween/are-bats-really-blind http://kids.discovery.com/tell-me/halloween/are-bats-really-blind Kid Zone – http://www.kidzone.ws/animals/bats/ http://www.kidzone.ws/animals/bats/ Questions and Answers About Blindness – https://nfb.org/nopbc-questions-kids-ask https://nfb.org/nopbc-questions-kids-ask The UltraCane – http://www.ultracane.com/index.php?route=common/home http://www.ultracane.com/index.php?route=common/home