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Published byKarin Jackson Modified over 9 years ago
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5/29 & 5/ th Grade Agenda Learning Objective: Learn about Reptiles & Birds Collect HW: Reading & Notetaking 231 – 234 Pass out HW & Tests & Grade Printout Pick new jobs Video: BBC Life (Amphibians & Reptiles) Textbook Reading 468 – 479 HW: Reading Guide Chap 12 Section 3 & 4 HW: Signed Grade Printout
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Reflection Prompt: Write 3 questions that you have about Reptiles.
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What are reptiles Reptiles are ectothermic Has Scales
Lays eggs on land The ancestors of reptiles were the first vertebrates adapted to life completely out of water.
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Amniotic Shell Lets the air in and out and keeps the embryo moist
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Characteristics of Lizards
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Can a turtle live outside it’s shell?
No! The shell is it’s rib and backbone.
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What are some characteristics of Birds?
Endothermic vertebrate Feathers Lay eggs Most can fly Four chambered heart Scales on feet and legs
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What were the ancestors of birds?
Dinosaurs This is a picture of Archaeopteryx lived about 145 million years ago How is archaeopteryx different from modern birds?
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What adaptations allows birds to fly?
Feathers Hollow bones (light weight) Large chest muscles Wing shape allows lift
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Birds have two type of feathers. How are their use different?
Which feather is used for insulation inside jackets and sleeping bags? Birds have two type of feathers. How are their use different? Contour Feathers Down Feathers Give shape to a bird’s body And help them fly Traps heat and keep the bird warm
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Do birds have teeth? Birds have no teeth.
What you see are not really teeth. It lacks the hard enamel of teeth
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How birds digest Crop: allows them to store food inside the body after swallowing it Gizzard: squeezes and grinds the partially digest food Gizzard contain many small stones
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Parental Care The partridge chicks find their own food from the day they hatch. The blue jay chicks are featherless, blind, and totally dependent on their parents for food for several weeks
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What are Owl Pellets? Owls do not have teeth and swallow preys whole
Owl’s stomach digests everything except the skeleton So the owl throws up skeleton as Owl Pellets
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How does bird’s wing shape affect flight?
Bird’s wing shape creates lift How does bird’s wing shape affect flight?
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Physics of Bird’s Flight
Bernoulli's Principle Faster an air move, less pressure it exerts The difference in pressure above and below the bird’s wing produce an upward force that causes the wing to rise
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Reflection Prompt: Write 5 facts that you learned from the video.
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