Tag: science & technology

Mars has two small moons named Phobos and Deimos. Both are irregularly shaped and much smaller than Earth's moon, and are thought to be captured asteroids that orbit close to the planet's surface.

Analysis of Martian soil by NASA's Phoenix lander and other missions has revealed that the soil is slightly alkaline, with a pH around 8-9. This surprised scientists who initially expected acidic conditions similar to Earth's volcanic environments.

Liquid water cannot exist on Mars' surface primarily because of the extremely low atmospheric pressure, which is about 1% of Earth's. At such low pressure, water either boils away immediately or remains frozen, making stable liquid water impossible on the surface.

Mars is not currently geologically active like Earth, as it lacks plate tectonics and significant volcanic activity. While it may have been geologically active billions of years ago, current evidence shows Mars is mostly geologically dormant today.

Clouds are primarily composed of water in the form of tiny water droplets or ice crystals. Water vapor condenses around particles to form clouds.

Nephology is the scientific study of clouds. The term comes from 'nephele' the Greek word for cloud. Don't confuse it with similar-sounding words.

Clouds are composed of tiny ice crystals or water droplets. The option 'crystals' refers to these ice crystals that form high clouds like cirrus.

High clouds including cirrus clouds are found in the troposphere which extends up to about 12km. All weather phenomena occur in the troposphere.

The ampersand (&) is a logogram representing the conjunction word 'and'. It is derived from the Latin word 'et' meaning 'and'. The other options are different symbols: * is asterisk, % is percent, and @ is at sign.