General Science Concepts Flashcards

What is the primary function of white blood cells in the human body?

Answer: Fight infections

White blood cells (leukocytes) are the body's primary defense against infections and foreign invaders.

What is the chemical formula for table salt?

Answer: NaCl

Table salt is sodium chloride, with the chemical formula NaCl.

Which planet in our solar system has the most moons?

Answer: Saturn

Saturn has the most confirmed moons of any planet in our solar system, surpassing Jupiter in recent discoveries.

What type of energy transformation occurs when a battery powers a flashlight?

Answer: Chemical to electrical to light

A battery converts stored chemical energy into electrical energy, which then powers the bulb to produce light energy.

What is the function of the ozone layer in Earth's atmosphere?

Answer: Blocks harmful ultraviolet radiation

The ozone layer in the stratosphere absorbs and blocks most of the sun's harmful ultraviolet (UV) radiation from reaching Earth's surface.

Which of the following is an example of a chemical change?

Answer: Iron rusting

Rusting (oxidation of iron) is a chemical change because it produces a new substance with different properties from the original iron.