Explanation

• The speed of sound in diamond is approximately 12,000 meters per second (m/s).
• It is one of the fastest speeds of sound among all materials.

The speeds of sound in different materials:

• Air: 343 m/s
• Water: 1433 m/s
• Wood: 3300-3600 m/s
• Brick: 4176 m/s
• Steel: 6100 m/s
• Diamond: 12000 m/s

Explanation

• The atomic number (Z) is the number of protons in the nucleus of an atom.
• In this case, the atomic number (Z) is 16, which means the number of protons is 16.

Explanation

• The alimentary canal, also known as the gastrointestinal (GI) tract, is a continuous tube that extends from the mouth to the anus.
• It includes all the organs of the digestive system.

Explanation

• Galileo Galilei is credited with creating his own improved version of the telescope in 1609, based on the design of the "Dutch perspective glasses".
• Although he did not invent the telescope, his improvements to the design and his astronomical discoveries using the telescope made him a key figure in its history.

Explanation

The Earth and the Sun are approximately 25,000 light-years away from the center of the Milky Way galaxy.

Explanation

• Nuclear fusion is the process by which atomic nuclei combine to form a heavier nucleus, releasing vast amounts of energy in the process.
• In the case of stars, nuclear fusion occurs when hydrogen atoms fuse together to form helium, releasing energy in the form of light and heat.

Explanation

Fertilizers are substances added to soil to provide essential nutrients for plant growth, making up for any deficiencies in the soil.

Explanation

• The symbolic representation of a molecule of a compound is called a formula.
• It uses symbols and numbers to represent the composition of the molecule.
• For example, the formula for water is H₂O, indicating two hydrogen atoms and one oxygen atom.

Explanation

• Copper - 64 isotope is used to kill cancer cells.
• By a particular type of treatment, known as radiotherapy.

Explanation

• Deserts are areas with very low rainfall, typically less than 25 centimeters (10 inches) per year.
• It resulting in a barren and often sandy landscape with limited vegetation and wildlife.