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5. Earth's atmosphere is made up of gases _______ and ________

a. Nitrogen and Ice b. Oxygen and Nitrogen

c. Water and Ice d. Water and Nitrogen

6. Which of the following is one of the characteristics of water that

make it crucial to terrestrial life?

a. It freezes b. It has density greater than the air

c. It is an excellent solvent d. It is odorless

7. About how long did life originate on Earth?

a. 35 million years b. 350 million years

c. 3.5 billion years d. 35 billion years

8. Possible evidence of life has been discovered in a meteorite that

originated on what Solar System body?

a. Europa b. Mars c. Moon d. Titan

9. Planets orbiting other stars have been discovered by measuring?

a. Doppler shifts b. Eclipses c. Parallaxes d. Radio

radiation

10. The planets discovered to be orbiting other solar-type stars have

masses that are?

a. Greater than that of the Sun b. Like that of the Earth

c. Much less than the Earth d. Similar to that Jupiter

11. The habitable zone of the Solar System includes which planets?

a. Earth alone b. Only Earth and Mars

c. Only Earth and V d. Venus, Earth and Mars

12. About how long will it take the voyagers to reach the distance of

the nearest stars?

a. A few centuries b. A few thousand years

c. Almost hundred thousand years d. Millions of years

13. Which statement describes the atmosphere of the planet correctly?

a. Earth is mostly Oxygen b. Mercury is mostly Nitrogen
14. How long does it take for light from the Sun to reach Earth?

a. 1 minute b. 8 minutes c. 24 hours d. Instantaneous

15. To weigh roughly two-thirds less than what you do on Earth, which

planet would you be on?

a. Jupiter b. Mars c. Uranus d. Venus
​

Sagot :

Matesdelidn

Answer:

5) B.Oxygen and Nitrogen

Earth's atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent.

just wanted

6) I don't know

7) C. 3.5 billion years

That is the age of the oldest rocks with fossil evidence of life on earth. These rocks are rare because subsequent geologic processes have reshaped the surface of our planet, often destroying older rocks

8) B.Mars

A NASA research team of scientists at the Johnson Space Center (JSC), Houston, TX, and at Stanford University, Palo Alto, CA, has found evidence that strongly suggests primitive life may have existed on Mars more than 3.6 billion years ago

9) i don't know

10) i don't know

11) A.Earth alone

Earth is the only planet in our solar system's habitable zone. Mercury and Venus are not in the habitable zone because they are too close to the Sun to harbor liquid water. However, evidence suggests that the Sun used to be much dimmer.

12) C. Almost hundred thousand years

This boundary is roughly about halfway to the nearest star, Proxima Centauri. Traveling at speeds of over 35,000 miles per hour, it will take the Voyagers nearly 40,000 years, and they will have traveled a distance of about two light years to reach this rather indistinct boundary.

13) i don't know

14) B.8 minutes

Sunlight travels at the speed of light. Photons emitted from the surface of the Sun need to travel across the vacuum of space to reach our eyes. The short answer is that it takes sunlight an average of 8 minutes and 20 seconds to travel from the Sun to the Earth.

15) B. Mars

Sorry if I didn't answer all your questions

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