Methane has 2 syllables and the stress is on the first syllable.
| # | Sentence | |
|---|---|---|
| 1. | Neptune has a mantle of liquid hydrogen while the atmosphere is a combination of ammonia, helium, and methane. In the upper atmosphere, methane freezes and forms an ice cloud which casts a shadow on the clouds below. | |
| 2. | Titan's black rivers and black lakes of methane were a sight to behold with ringed Saturn and the faint distant sun in the cloudy horizon. | |
| 3. | How many carbon atoms does methane have? | |
| 4. | Since 1990, methane emissions have decreased by 11%. | |
| 5. | In March 2014, the Administration released a Strategy to Reduce Methane Emissions from landfills, coal mining, agriculture, and oil and gas systems through voluntary actions and common-sense standards. | |
| 6. | Our atmosphere contains 21% oxygen, which is necessary for us to breathe, 78% nitrogen, and 0.9% argon. The other 0.1% consists of water vapor, carbon dioxide, neon, methane, krypton, helium, xenon, hydrogen, nitrous oxide, carbon monoxide, nitrogen dioxide, sulfur dioxide, and ozone. | |
| 7. | Cold methane gas is responsible for the blue-green color of Uranus. | |
| 8. | Uranus' atmosphere is made up of hydrogen, helium, and methane. | |
| 9. | The temperature in Uranus' upper atmosphere is so cold that the methane condenses and forms a thin cloud layer which gives the planet its blue-green appearance. | |
| 10. | Triton is thought to be a combination of rock and ice. Its surface temperature is -245 degrees Celsius, and it has a thin atmosphere of nitrogen and methane. |