<TED Worksheet>
9. Underwater astonishments  
David Gallo
<5:10>   March 2007 

 

Questions
(PDF)  (Word)

Answers
(PDF)  (Word)

Transcipt

 




 

<Questions: Underwater astonishments>
1. According to the speaker, how long does it take to reach a perfectly, positively, pitch-black world under the sea?

 

 

2. What did Dr. Edith Widder, a researcher at the Ocean Research and Conservation Association, invent?

 

 

3. List two reasons why some animals use bioluminescence.

(1)_________________

(2)_________________





4. According to the speaker, what  percentage of the ocean have we explored so far?

 

 

5. The speaker describes cephalopods, which are also known as head-foots. Fill in the blanks.

<><><><>><><><><><><><>

I. Octopuses

Their eyes can sense their _____________,

look at _________________________ and

look at _________________________.

II. Squid (Males)
(a) When they fight, if they are really aggressive,

they turn _______________.

(b) They fight by bouncing their _______________ together.

(c) They can split their _______________.

III. Cuttlefish
(a) They can make their  _______________ look just like algae.

<><><><>><><><><><><><>




6. Some octopuses do not want to be seen when they move. Why?

 

 

7. Some octopuses use their skin to change their colors and texture,
but what do they do once they are seen?

 




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<Answers: Underwater astonishments>
1. According to the speaker, how long does it take to reach a perfectly positively pitch-black world under the sea?
about two and half hours. (2.5 hours)

 

2. What did Dr. Edith Widder, a researcher at the Ocean Research and Conservation Association, invent?
a camera that can capture some animals with bioluminescence

 

3. List two reasons why some animals use bioluminescence.

(1)__to avoid being eaten____

(2)_____to attract prey_______
(another possible answer) to hypnotize

 




4. According to the speaker, what percentage of the ocean have we explored so far?
about 3 %

 

 

5. The speaker describes cephalopods, which is also known as head-foots. Fill in the blanks.

<><><><>><><><><><><><>
I. Octopuses

Their eyes can sense their ___surroundings___,

look at _______light________ and

look at ______patterns_________.

II. Squid (Males)
(a) When they fight, if they are really aggressive, they turn _____white____.

(b) Thy fight by bouncing their ____butts____ together.

(c) They can split their ___coloration____.

III. Cuttlefish

(a) They can make their  _tentacles__ look just like algae.

<><><><>><><><><><><><>




6. Some octopuses do not want to be seen when they move. Why?
Because predators can see them.

 

7. Some octopuses use their skin to change their colors and texture,
but what do they do once they are seen?
Get as big as they can. (Bluff)

 

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