General Science Flashcards

Which subatomic particle has a negative charge?

Answer: Electron

Electrons carry a negative charge and orbit the nucleus of an atom in energy shells.

What is the primary function of red blood cells?

Answer: Carry oxygen throughout the body

Red blood cells contain hemoglobin, which binds oxygen in the lungs and delivers it to body tissues.

Which law states that energy cannot be created or destroyed, only transformed?

Answer: First Law of Thermodynamics

The First Law of Thermodynamics (conservation of energy) states that the total energy of an isolated system remains constant.

What is the speed of light in a vacuum, approximately?

Answer: 300,000 km/s

Light travels at approximately 300,000 kilometers per second (3 × 10⁸ m/s) in a vacuum.

Which element is essential for the formation of bones and teeth?

Answer: Calcium

Calcium, often obtained from dairy products and leafy greens, is the primary mineral that gives bones and teeth their strength.

What is the process by which water vapor cools and turns into liquid water?

Answer: Condensation

Condensation occurs when water vapor loses heat energy and transitions back into liquid water, as seen on a cold glass.

Which type of electromagnetic radiation has the shortest wavelength?

Answer: Gamma rays

Gamma rays have the shortest wavelengths and highest frequencies in the electromagnetic spectrum, making them the most energetic.