Signs of Life on Exoplanet K2-18b

Dấu hiệu sự sống trên hành tinh ngoài hệ mặt trời K2-18b

Vocabulary List

Vocabulary Review Tasks

✅ Vocabulary Review Tasks

Task 1: Fill in the Blanks

(life, exoplanet, solar system, light-year, habitable zone)

Complete the sentences with the correct words:

1. Earth is the only planet in the __________ known to have __________.

2. A(n) __________ is a planet that orbits a star outside our __________.

3. A __________ is the distance that light travels in one year.

4. Scientists look for planets in the __________, where life might be possible.

Task 2: Unscramble the Word

Unscramble the letters to find the correct word. Then write it in the blank.

1. Scientists believe __________ __________ is needed for life.
   → Q L I U I D  / W T A R E

2. The __________ keeps heat around the Earth.
   → P H A M S T O E R E A

3. Air is made of different kinds of __________.
   → S A G

4. __________ is a smelly gas made by living things.
   → H T M E N A E

5. Too much __________ __________ in the air can harm the planet.
   → R A C O N B  / D O I D X E

Task 3: Synonym Matching

Match the words with their closest meanings:

Task 4: Gap Filling (Paragraph)

(research, excited, cautious, observations, technology)

Fill in the blanks with the correct words from the box:

Word Bank: research – excited – cautious – observations – technology

Scientists were very __________ when they found signs of gas in the planet’s sky. However, some are still __________ because they need more proof. They are now doing more __________ to check their ideas. New __________ helps them look closely at planets far away. They use their __________ to understand what they see through the telescope.

Task 5: Multiple Choice

(data, planet size, temperature, orbit, space)

Choose the best answer for each question:

1. What do scientists collect to study a planet?
   a. size
   b. data
   c. air
   d. sky

2. What describes how big a planet is?
   a. orbit
   b. light
   c. planet size
   d. telescope

3. What do you call the path a planet moves around a star?
   a. space
   b. orbit
   c. distance
   d. moon

4. The __________ of a planet can be too hot or too cold for life.
   a. planet size
   b. orbit
   c. space
   d. temperature

5. Astronauts travel into __________ to study the universe.
   a. life
   b. space
   c. zone
   d. air

🗝️ Answer Keys

Task 1: Fill in the Blanks

1. solar system / life

2. exoplanet / solar system

3. light-year

4. habitable zone

Task 2: Unscramble the Word

1. liquid water

2. atmosphere

3. gas

4. methane

5. carbon dioxide

Task 3: Synonym Matching
1 - c
2 - a
3 - d
4 - b
5 - e

Task 4: Gap Filling

1. excited

2. cautious

3. research

4. technology

5. observations

Task 5: Multiple Choice

1. b

2. c

3. b

4. d

5. b