Everyday Science

The term 'Dark side of the Moon' commonly refers to the far side of the Moon that is not visible from Earth, but it is not a specific region like the equator or poles. Therefore, none of the given options correctly identify the 'Dark side'.

The Beaufort Scale is the standard measurement scale used to estimate wind speed based on observed conditions, making it the correct answer. The Richter Scale measures earthquake magnitude, and 'Meter-second scale' is not a recognized scale for wind speed.

Cow's milk typically contains about 87% water, which is the highest percentage among the given options. This high water content is essential for its nutritional and fluid properties.

Raymond Damadian is credited with inventing the first magnetic resonance imaging (MRI) machine, pioneering the use of NMR technology for medical imaging. The other options are scientists known for different discoveries: Godfrey Hounsfield developed the CT scanner, Matthias Schleiden and Theodore Schwann contributed to cell theory.

One tonne is defined as 1000 kilograms. This is a standard unit conversion in the metric system.

The greatest distance between the Earth and the Sun occurs at aphelion, which is the point in Earth's orbit farthest from the Sun. The other options are either incorrect terms or unrelated.

Titan is the second largest moon in the solar system and it orbits the planet Saturn. It is well-known for its dense atmosphere and is the largest moon of Saturn.

CT scans deliver higher radiation doses compared to standard X-rays, ultrasounds, and MRIs because they use multiple X-ray images to create detailed cross-sectional views. Ultrasound and MRI do not use ionizing radiation, and standard X-rays generally have lower doses than CT scans.

A bolometer is an instrument used to measure the power of incident electromagnetic radiation via the heating of a material with a temperature-dependent electrical resistance. It effectively measures heat radiation.

A fresh egg placed in salt water floats because salt water is denser than fresh water, increasing the buoyant force on the egg. This causes the egg to float rather than sink to the bottom.