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3. Stella : What do you know about Mercury?
Benjamin : Well, it is the closest planet to the Sun. It’s also the smallest planet.
Stella : How many satellites does it have?

Benjamin : It doesn’t have any confirmed satellites.
Stella : What is the temperature like there?
Benjamin : It’s around 430 degrees Celsius during the day and drops to -180 degrees Celsius at night.

According to the conversation, Mercury _________________ .
A) is very far from the Sun B) has many moons
C) is colder at night D) is larger than our planet

Answer the questions (4-5) according to the table below.

Mars Earth
Carbon dioxide (95.32%)
Nitrogen (2.7%) Nitrogen (77%)
Argon (1.6%) Oxygen (21%)
Atmosphere
Oxygen (0.13%) Argon (1%)
Water vapor (0.03%) Carbon dioxide (0.038%)
Nitric oxide (0.01%)
Distance from Sun 227,936,637 km 149,597,891 km
Length of Day 24 hours, 37 minutes 24 hours

Length of Year 687 Earth days 365 days
Covered with a mixture of carbon
Polar Caps covered with water ice
dioxide ice and water ice
Surface Temperature (Ave-
rage) -63 degrees Celsius 14 degrees Celsius
Satellites 2 (Phobos and Deimos) 1 (Moon)

4. Which of the following is CORRECT?
A) The rate of carbon dioxide is higher on Mars. B) Earth is farther from the Sun than Mars.
C) The average surface temperature is lower on our home planet. D) There are more days in a year on Earth.

5. Which question DOES NOT have an answer?
A) How many satellites does Mars have? B) How far is our home planet from Mars?

C) What does Mars’ atmosphere consist of? D) How many hours are there in a day on Mars?

6. Our solar system is very big. It consists of planets, comets, asteroids, satellites and dwarf planets. All objects in
the solar system orbit the Sun. The Sun is a star which heats our home planet.
Which of the following visuals IS NOT related to the text?

A) B) C) D)

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