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[D] NatGeo: Caffeine

LET'S UNLOCK WORDS AND PHRASES 🔐

entrenched

[ en-'trencht ]

adjective

- established firmly so that it cannot be changed

Television seems to be firmly entrenched as the number one tool for national advertising.

stimulate

[ 'stim-yuh-leyt ]

verb

- to cause part of the body to operate

Standing on your head is supposed to stimulate hair growth.

fatigue

[ fuh-'teeg ]

noun

- extreme tiredness

She was suffering from fatigue.

sporadically

[ spuh-'rad-ik-uh-lee ]

adverb

- sometimes, but not regularly or continuously

The security door buzzed sporadically as residents came and went.

hit the shelves

phrase

- to become available for purchase

The new products will hit the shelves this weekend.

LET'S TAKE A LOOK! [ FULL CLIP ]

What is the video all about? Choose two statements that refer to the main ideas of the video.


1. Caffeine is the most widely used psychoactive substance.

2. The effects of caffeine to the central nervous system.

3. The history of coffee beans.

4. The risks of taking too much caffeine.

LET'S PRACTICE-SCRIPT COMPLETION

A. First Cut

Direction: Watch the first cut of the video and complete the following lines below with the missing words. Write or type down your answers while listening.

⏱ 00:00 - 01:16

  1. "From morning coffee to afternoon tea, is so thoroughly in our daily routines.

  2. "...and has become the world's mostly wide used substance."

  3. "Caffeine is a chemical compound that the central system."

  4. "It accomplishes it by itself to adenosine receptors in the ."

  5. "In doing so, it adenosine molecules, which are for slowing down the central nervous system before we sleep."


B. Second Cut

Direction: Watch the second cut of the video and complete the following lines below with the missing phrases.

⏱ 02:18 - 03:46

  1. "Tea became popular by the 14th century in China during the ."

  2. ", but didn't catch on until almost 400 years later."

  3. "Today, caffeine can be found ."

  4. "...and more and more caffeine-infused products are everyday."

  5. "In the United States, nearly 90% of the population has at least everyday."


LET'S DO THE CHALLENGE-Comprehension Questions

Direction: Answer the following questions below based on the video.

  1. How is caffeine commonly consumed in daily life?

    a. Only in energy drinks

    b. How is caffeine commonly consumed in daily life?

    c. Mostly in medicines

  2. What type of substance is caffeine classified as?

    a. A vitamin

    b. A mineral

    c. A psychoactive substance

  3. How does caffeine affect the central nervous system?

    a. It stimulates it

    b. It slows it down

    c. It completely shuts it off

  4. What does caffeine attach itself to in the brain?

    a. Dopamine receptors

    b. Serotonin molecules

    c. Adenosine receptors

  5. What is the role of adenosine molecules in the brain?

    a. They make people feel more energetic

    b. They slow down the central nervous system before sleep

    c. They increase alertness