Learn English with PBS

• ☐ ☐ ☐ a portal [n] - a doorway, gateway
• ☐ ☐ ☐ peer into [v] - look into
• ☐ ☐ ☐ exquisite [adj] - well-made, delicate
• ☐ ☐ ☐ olfactory [adj] - relating to the sense of smell
• ☐ ☐ ☐ a sniffer [n] - a person who sniffs
• ☐ ☐ ☐ track [v] - follow the course or trail
• ☐ ☐ ☐ a scent [n] - a smell
• ☐ ☐ ☐ an odor [n] - a smell
• ☐ ☐ ☐ swirly [adv] - move in a twisting or spiraling pattern
• ☐ ☐ ☐ air currents [n] - streams of air
• ☐ ☐ ☐ make sense of [exp] - understand
• ☐ ☐ ☐ a precision instrument [exp] - an exact and accurate tool
• ☐ ☐ ☐ tell [v] - differentiate
• ☐ ☐ ☐ nasal [adj] - related to the nose
• ☐ ☐ ☐ outdo [v] - do better than
• ☐ ☐ ☐ split off [phv] - separate from the main passage
• ☐ ☐ ☐ a chamber [n] - a room or space
• ☐ ☐ ☐ a recess [n] - a small space
• ☐ ☐ ☐ intricate [adj] - complicated and detailed
• ☐ ☐ ☐ in cross-section [exp] - a shape that is exposed by making a straight cut through something
• ☐ ☐ ☐ feed [v] - give continuously
• ☐ ☐ ☐ a patch [n] - a small part of something
• ☐ ☐ ☐ blast [v] - blow (air) with force
• ☐ ☐ ☐ a slit [n] - a small thin hole
• ☐ ☐ ☐ hit the trail [exp] - start a trip
• ☐ ☐ ☐ pick up [phv] - notice
• ☐ ☐ ☐ a molecule [n] - the smallest fundamental unit of a chemical compound
• ☐ ☐ ☐ leave behind [phv] - not bring with
• ☐ ☐ ☐ tell apart [phv] - differentiate

[n] - noun,  [v] - verb,  [phv] - phrasal verb,  [adj] - adjective,  [exp] - expression

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1. A dog can perceive what happened only an hour into the past through its nose.
   True
   False
   
   
2. Zinka is a search-and-rescue dog.
   True
   False
   
   
3. The "exquisite olfactory device" the speaker mentions is the dog's nose.
   True
   False
   
   
4. Zinka is wearing many sensors.
   True
   False
   
   
5. Smells spread out evenly on a field.
   True
   False
   
   
6. Dogs can differentiate between smells that come from the left and the right.
   True
   False
   
   
7. Humans can differentiate between smells that come from the left and the right.
   True
   False
   
   
8. Dogs' nasal passages are divided into left and right.
   True
   False
   
   
9. When a dog inhales, about half of the air goes into its olfactory recess.
   True
   False
   
   
10. Dogs' olfactory sensory cells are spread out over numerous little passages.
    True
    False
    
    
11. Humans' olfactory sensory cells are spread out over numerous little passages.
    True
    False
    
    
12. Dogs exhale through the front of their nose.
    True
    False
    
    
13. Dogs can sniff about once per second.
    True
    False
    
    
14. Dogs can smell a single molecule left by a human.
    True
    False
    
    

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Directions: Write sentences about the video clip using the words given. You can change the word form or add words, but you cannot change the word order.
( ) = optional   [ ] = necessary

Instrucciones: Escriba oraciones sobre el videoclip usando las palabras dadas. Puede cambiar la forma de la palabra o agregar palabras, pero no puede cambiar el orden de las palabras.

Instrucciones: Escreva orações sobre o videoclipe usando as palavras-chave. Você pode alterar a forma da palavra ou adicionar palavras, mas não pode alterar a ordem das palavras.

지시 : 주어진 단어를 사용하여 비디오 클립에 대한 문장을 씁니다. 어형을 변경하거나 단어를 추가할 수 있지만 어순은 변경할 수 없습니다.

dog / can / peer / past / use / nose

A dog can peer into the past (by) using its nose.
Dogs can peer into the past (by) using their nose.

dog / can / pick / scent / one / week / ago

Dogs can pick up a scent from one week ago.
A dog can pick up a scent from one week ago.

Zinka / wear / GPS / device / other / sensor

Zinka is wearing a GPS device and other sensors.

smell / odor / often / twist / air / current

Smells and odors are often twisted around by air currents.

both / dog / human / can / tell / smell / come / left / right.

Both dogs and humans can tell [if/whether] a smell is coming from the left or (the) right.
Both a dog and a human can tell [if/whether] a smell is coming from the left or (the) right.

dog / about / 15 / time / sensory / cell / nose / than / human

Dogs have about 15 times more sensory cells in their nose than humans (do).
A dog has about 15 times more sensory cells in its nose than a human (does).

dog / sniff / about / five / time / second

Dogs sniff about five times [per/a] second.
A dog sniffs about five times [per/a] second.

dog / inhale / front / nose / and / exhale / side / nose

Dogs inhale through the front of their nose(,) and (they) exhale through the sides of their nose.
A dog inhales through the front of its nose(,) and (it) exhales through the sides of its nose.

Zinka / can / smell / just / few / molecule / leave / behind / hiker

Zinka can smell just a few molecules left behind by [a/the] hiker.

1. What information in this video was new for you? Was anything surprising?
2. Humans have five basic senses: sight, hearing, touch, taste and smell. Put them in order from most to least important.
3. What breed do you think Zinka is? What is your favorite breed of dog?
4. Humans use dogs in numerous professional situations. Can you think of eight different ways humans use dogs? (What are eight dog jobs?)
5. Below are some common working dog breeds and some common dog jobs. Can you match the breeds to the jobs? Why do you think each breed is useful for each type of job?
   
   

Beagle	Bloodhound	Border Collie	Doberman Pinscher

German Shepherd	Golden Retriever	English Shepherd	Husky

Labrador Retriever	Pit Bull Terrier	Rottweiler	Spaniel

• Detectors (disease, drugs, bombs) Spaniels, Labrador Retrievers, German Shepherds, Beagles, Bloodhounds
• Fire Dogs Dalmatians
• Guard Dogs Doberman Pinschers, German Shepherds, Rottweilers
• Herding Dogs Border Collies, English Shepherds
• Hunting Dogs Spaniels, Hounds, Terriers
• Police Dogs Bloodhounds, German Shepherds
• Sled Pullers Huskies
• Seeing-Eye Dogs Labrador Retrievers, German Shepherds, Golden Retrievers
• Search & Rescue Dogs Beagles, Pit Bull Terriers, Bloodhounds, German Shepherds
• Therapy Dogs Golden Retrievers, Labradors