Explore the Wonders of Science

What is the chemical symbol for gold?

• Fe

• Ag

• Au

• Pb

What is the process by which plants make their food called?

• Respiration

• Transpiration

• Digestion

• Photosynthesis

What is the powerhouse of the cell?

• Mitochondria

• Chloroplast

• Ribosome

• Nucleus

What is the speed of light in a vacuum?

• 299,792 kilometers per second

• 150,000,000 meters per second

• 299,792,458 meters per second

• 300,000,000 meters per second

What is the main gas found in the Earth's atmosphere?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Helium

What is the law of conservation of mass?

• Mass is conserved in chemical reactions; it cannot be created or destroyed.

• Mass is only conserved in physical changes.

• Mass can be destroyed during a reaction.

• Mass can be created in chemical reactions.

What is the most abundant element in the universe?

• Carbon

• Oxygen

• Hydrogen

• Helium

What is the pH level of pure water?

• 7

• 8

• 6

• 5

What is the primary function of red blood cells?

• To produce insulin for the body.

• To fight infections and diseases.

• To transport oxygen and carbon dioxide.

• To store nutrients and vitamins.

What is Newton's second law of motion?

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F = ma).

• The force acting on an object is equal to its mass times its velocity (F = mv).

• An object in motion will stay in motion unless acted upon by an equal force.

• The acceleration of an object is constant regardless of the net force applied.