batty about echolocation. what do is echolocation? echo location
TRANSCRIPT
Batty About Echolocation
What do is echolocation?• ECHO
• LOCATION
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
What does this diagram show?
Batty GroupsEgyptian Fruit Bats Little Brown Bats Ghost Bats
BellaDeanSherylElijah
HaileyMattKelseyChristopher
BradyAmandaJoeyAudrey
Vampire Bats Lesser Horseshoe Bats
Spotted Bats
NoahSophieOlivia M.Owen W.
Tommy MaryHunterKim
Olivia H.GavinOwen 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/hu
man-echolocation-activat
es-visual-parts-of-the-brai
n
/
• Article
– http
://www.people.com/people
/article/0,,1212568_1,00.
html
Recommended Websites• Bat Conservation International
– 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
• Kid Zone
– http://www.kidzone.ws/animals/bats/
• Questions and Answers About Blindness
– https://nfb.org/nopbc-questions-kids-ask
• The UltraCane
– http://www.ultracane.com/index.php?route=common/home