exercise (1)

• 1)Why is Earth called “the living planet?”

  • It sustains life.
  • It has atmosphere.
  • It has water at the surface.
• 2. Which among the set of planets are called terrestrial?

  • Mercury, Venus, Mars, Earth
• • 3. What makes the planet Earth habitable compared to other planets?
  • It has liquid water
• 4. What makes planet Earth habitable?

  • It has comfortable distance from the sun.
  • It has atmosphere that protects from radiation.
  • The atmosphere holds carbon dioxide and other gases.
• 5. Why is Earth called a terrestrial planet?

  It is closest to the sun.
• 6. Which of the following best describes the surface of the planet Earth?

  • mostly water surface with some areas of land
• 7. Earth is said to be a unique planet.

  • It supports life.
  • It is mostly covered in water.
  • Its atmosphere is mostly nitrogen and oxygen.
• 8. Which is supported and sustained by planet?

  • life
• 9. How many percent of water comprises the Earth?

  • 70%
• 10. Which factors are needed for organisms to live on Earth?

  • temperature and nutrient
  • atmosphere and energy
• 11.What characteristics does the Earth have to maintain an organism’s body to survive?

  • Earth has a water cycle and atmosphere.
  • Earth has volcanic activities to circulate nutrients.
  • Earth has sub-surface water or molten rock that can circulate and replenish nutrients for organisms.
• 12.What makes Earth similar to Venus?

  • Earth and Venus are the right sizes to hold a sufficient atmosphere.
  • Among all the solid planets and moons, only Earth, Venus, and Titan have significant atmospheres
• 13.Which statement about the Earth’s energy in sustaining life is incorrect?

  Earth survives in too little energy.
• 14.Which distinct characteristic made Earth different from any other planet?.

  • It is the only planet that has a large amount of liquid water.
• 15. What does Earth offer to human in order to sustain life?

  • Earth has abundant plant life.
  • Earth has sufficient nutrients from ocean to land.
• Venus has very thick atmosphere which is almost dense as Earth, while Mars has thin atmosphere.
• Venus is hotter than Earth. Mars is colder than Earth
• 16.What makes planet Earth different from the other planets in the solar system?

  • It supports life.
  • It is mostly covered in water.
  • The atmosphere holds gases.
• 17. Which statement does not describe planet Earth?

  • It has atmosphere made of nitrogen alone.
• 18.What makes planet Earth a “house” for living organisms?

  • It has comfortable distance from the sun.
  • The atmosphere serves as shields from the sun.
• 19. Which is not true about Earth when compared to Mars?

  • It has water and atmosphere.
• 20. What benefits dose the Earth’s atmosphere gives to endure life on Earth?

  • The atmosphere nourishes life on Earth
  • The atmosphere protects Earth from meteorites.
  • The atmosphere gases blocks damaging ultraviolet light
  • The atmosphere reduce temperature extremes between day and night
• 21. Planet Earth is considered as “blue planet.” Which of the following best describes the surface of planet Earth?

  • Earth has mostly water on the surface
• 22. For many, Earth is different from other planets. Why do you think so?

  • Earth is mostly covered in water.
• 23. Which statements best define planet Earth?

  • It supports life.
• 24. It was found out that Earth’s surface is covered with water. Approximately, how many percent of water comprises the Earth?

  • 70% water
• 25. Earth can support the survival of organisms. What is/are the factor/s that make/s Earth habitable?

  • atmosphere
  • temperature
  • energy
  • nutrient
• 26. In order for an organism to survive, nutrients are needed. What are the nutrients that planet Earth can offer for an organism to exist?

  • Earth has an atmosphere and ozone layer.
  • Earth has both water cycle and nitrogen cycle.
  • Earth has natural activities to circulate nutrients.
• 27. Many studies have shown similarities of Earth and Venus. What makes Earth similar with Venus?

  • Earth and Venus are of the right size to hold a sufficient atmosphere.
• 28. What makes human and other living organisms capable to live on Earth?

  • Earth has the right amount of temperature, water, good atmosphere, and favorable climate.
• 29. Planet Earth is considered uniquely different from any other planets in the Solar system. Which among the given choices correctly answers the statement?

  • Earth is the only planet that is mostly covered with water.
• 30. What is the reason why every living thing on Earth has the chance of survival?

  • Earth has ozone layer to protect living organisms from harmful radiation.