MARINE SCIENCE. Monday 30 Apr 2018

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1 MARINE SCIENCE Monday 30 Apr 2018

2 How long have sharks been swimming the seas? 450 million years. How are sharks portrayed in the media & what is the truth in numbers? Maneaters, but they attack < 100 people a year. Entry Task

3 Agenda Housekeeping Unit_15 Fish:

4 Housekeeping 10th graders will be taking ELA Smarter Balance Assessment. In the auxiliary gym. Guest teacher next week, Friday, 11 May.

5 Returns Unit_14 Classifying Marine Animals Summative Assessment. Hold your questions until all assessments have been returned.

6 Sharks: Mostly Peaceful, Longtime Inhabitants of the Sea 350 known species & only 35 have shown themselves to be dangerous to humans. Hammerhead, mako, & tiger among best known. Most feared = great white shark - Does deserve respect; grows as large as 25 feet in length & one of the fastest swimming of all sharks. - Tends to live in colder waters near large prey = seals

7 Sharks: Mostly Peaceful, Longtime Inhabitants of the Sea

8 Sharks: Mostly Peaceful, Longtime Inhabitants of the Sea Many shark attacks are a case of mistaken identity. Swimmers on the surface look like wounded marine animals. Other attacks may be as a result of humans invading or disturbing sharks territories.

9 Sharks: Mostly Peaceful, Longtime Inhabitants of the Sea Except for whales, whale sharks & basking sharks are the largest animals in the sea. Docile & gentle plankton feeders. Grow 40 feet & longer. Sharks range in size from the massive whale shark & basking sharks to the six-inch cigar shark.

10 Unit_15 Fish - Practice #2 Complete both sides of the worksheet. Information will be on the summative assessment. Note: The Unit_15 Fish - Practice 2 worksheet can be located on the Biology link:

11 MARINE SCIENCE Tuesday 1 May 2018

12 Entry Task Why do most shark attacks occur? Mistaken identity; shark thinks you are prey. What are the two largest fish in the ocean? Whale shark & the basking shark.

13 Agenda Housekeeping Unit_15 Fish -

14 Housekeeping 10th graders will be taking ELA Smarter Balance Assessment. In the auxiliary gym. Modified Wednesday ACE schedule. Period 1 07:35-08:14 Assembly 08:18-08:55 Period 2 08:59-09:38 Period 3 09:42-10:21 Period 4 10:25-11:04 1st Lunch 11:08-11:38 Period 5 11:42-12:21 Period 5 11:08-11:47 2nd Lunch 11:51-12:21 Period 6 12:25-13:05 Guest teacher next week, Friday, 11 May.

15 Formative Assessment Grab a ChromeBook from the cart. Be sure to grab the number that corresponds to the number on your desk. Log into goggle classroom & complete the formative assessment Unit_15 Fish - Formative 01 on your own. No notes This will not affect your grade, it is a measure of what you currently know about the Nature of Seawater. This will inform you & I about what areas we need to focus on before the summative assessment.

16 The Structure of Sharks: Fins & Gills Basic body structure characterized by Fins; used to push or propel themselves through water.

17 The Structure of Sharks: Fins & Gills - Pectoral fins provide lift & prevents the shark from sinking. - Anal fins present in only some sharks. Males have a long extension (clasper), used in mating.

18 The Structure of Sharks: Fins & Gills Sharks & rays breathe through visible or exposed gills slits. - Many sharks cannot force water over their gills to breathe, must keep swimming or rely on currents. Cartilaginous fish have a pair of breathing holes (spiracles).

19 Sharks: Built for the Hunt Sharks have many sense organs that aid them in locating & attacking potential prey. - Lateral line organ. - Ampullae of Lorenzini - Keen sense of smell. - Protective eyelids - Hinged jaws - Rows of teeth

20 Sharks: Built for the Hunt Lateral line organ used in feeling vibrations. - Lateral line = Line of sensitive sound receptors along each side of the fish s body. - When vibrations reach the shark it feels a change in pressure that becomes irritating.

21 World's Deadliest: Shark Superpowers (3:46): Synopsis: Razor-sharp teeth are just the beginning of a shark's arsenal. An array of super-senses helps some sharks detect prey over a mile away.

22 How Do Sharks and Rays Use Electricity to Find Hidden Prey? (3:50): Synopsis: When it comes to spotting prey, sharks and rays have a secret sense beyond sight and smell. Tiny goo-filled organs called Ampullae of Lorenzini detect the invisible electric fields produced by all living creatures.

23 Sharks: Built for the Hunt Ampullae of Lorenzini detects electrical fields generated by the muscles of fish & other animals. - Network of jelly filled pores - Explains the bizarre behavior of attacking metal boat propellers & consuming metal cans & license plates.

24 MARINE SCIENCE Wednesday 2 May 2018

25 Entry Task How can you tell the difference between a female & male shark? Male sharks have claspers between the pelvic fin & anal fin. What is the difference between the lateral line & the ampullae of Lorenzini? Line of sensitive sound receptors along each side of the fish s body. Network of jelly filled pores that detects electrical fields generated by the muscles of fish & other animals.

26 Agenda Housekeeping Unit_15 Fish -

27 Housekeeping Modified Wednesday ACE schedule. Period 1 07:35-08:14 Assembly 08:18-08:55 Period 2 08:59-09:38 Period 3 09:42-10:21 Period 4 10:25-11:04 1st Lunch 11:08-11:38 Period 5 11:42-12:21 Period 5 11:08-11:47 2nd Lunch 11:51-12:21 Period 6 12:25-13:05 Guest teacher next week, Friday, 11 May.

28 Returns Unit_15 Fish - Formative 01 Review questions & answers.

29 Sharks: Built for the Hunt Ampullae of Lorenzini detects electrical fields generated by the muscles of fish & other animals. - Network of jelly filled pores - Explains the bizarre behavior of attacking metal boat propellers & consuming metal cans & license plates.

30 Sharks: Built for the Hunt Pair of nostrils used for detecting smells - Smell so sharp, a small amount of blood can be detected nearly half a kilometer away (1 part per million). - Brain size responsible for keen sense of smell (2/3 utilized for detecting smells).

31 Sharks: Built for the Hunt Protective eyelids. - When closed sharks rely on electrical fields - Lack of vision & reliance on electrical fields may explain why metal objects are attacked when closing on prey. Hinged jaws allowing the jaws to disjoint during feeding. - Permits chewing of large animal parts & whole animals.

32 Sharks: Built for the Hunt Numerous rows of overlapping razor-sharp teeth - Can be quickly regrown when teeth are broken off or worn down. - Similar to a conveyor belt replacing teeth within a day. - Most sharks have about 5 rows of teeth; the bull shark has 50 rows.

33 Sharks: Built for the Hunt Whenever swimming in open waters shark encounters are possible; be prepared. Do NOT panic or try to drive the shark away by splashing or yelling. Remain calm & move slowly towards the surface or shore. Maintain eye contact; sharks are ambush predators.

34 Rays: Bottom Dwellers of the Ocean Relative of shark & also have skeletons of cartilage & denticles. Unlike sharks they have enlarged pectoral fins that resemble broad wings.

35 Rays: Bottom Dwellers of the Ocean Rays Grow to 20 feet or more from tip to tip. Can bury themselves in seafloor sediment. Some live close to shore (Southern stingray & skate).

36 Rays: Bottom Dwellers of the Ocean Rays Others live in deeper waters & feed on plankton (eagle ray & manta ray). Their mouth is on the underside containing broad teeth (plates of cartilage used to grind shellfish).

37 MARINE SCIENCE Thursday 3 May 2018

38 Entry Task What are structures that assist sharks in the attack? Protective eyelids Hinged jaws Rows of teeth How many rows of teeth do sharks usually have? 5 rows of teeth

39 Agenda Housekeeping Unit_15 Fish -

40 Housekeeping Guest teacher next week, Friday, 11 May.

41 Rays: Bottom Dwellers of the Ocean Relative of shark & also have skeletons of cartilage & denticles. Unlike sharks they have enlarged pectoral fins that resemble broad wings.

42 Rays: Bottom Dwellers of the Ocean Rays Grow to 20 feet or more from tip to tip. Can bury themselves in seafloor sediment. Some live close to shore (Southern stingray & skate).

43 Rays: Bottom Dwellers of the Ocean Rays Others live in deeper waters & feed on plankton (eagle ray & manta ray). Their mouth is on the underside containing broad teeth (plates of cartilage used to grind shellfish).

44 Rays: Bottom Dwellers of the Ocean Few rays can be dangerous. Stingrays have sharp, poisonous barb near the bottom of its tail. - Sticks in skin & causes infection.

45 Rays: Bottom Dwellers of the Ocean Few rays can be dangerous. To avoid being stung drag your feet along bottom as you walk. If you are stung - Do NOT try to remove the spine yourself. - remain calm, apply cold compress, & seek medical attention quickly.

46 Unit_15 Fish - Lab Activity #1 Identify each of the sharks or rays using the Dichotomous Key. Dichotomous key = tool that allows the user to determine the identity of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, & fish. Consists of a series of choices that lead to the correct name of a given item. - "Dichotomous" means "divided into two parts". Note: The Unit_15 Fish - Lab Activity #1 worksheet can be located on the Biology link:

47 MARINE SCIENCE Friday 4 May 2018

48 Entry Task What organism is pictured in the image? Skate. Few stingrays can be dangerous & have what located near the bottom of their tails? Their tail has a short, poisonous barb.

49 Agenda Housekeeping Unit_15 Fish -

50 Guest teacher Friday, 11 May. Housekeeping

51 Video Galapagos: Realm of Giant Sharks (52:47): During the video identify 5 key pieces of information. Using the information you will develop five questions with answers.

52 Video Galapagos: Realm of Giant Sharks (52:47): Synopsis: Documentary follows a group of researchers who have travelled out to Darwin Island to begin following these (whale sharks) dinosaurs of the sea wherever they travel across the globe. But placing satellite tracking devices on giant sharks is not always easy. Steel spear tips bounce off, dangerous currents intervene, & the sharks can deliver bone-crushing swipes with their tails. d=1

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