Exploring the Wonders of Science

What is the chemical symbol for gold?

• Fe

• Ag

• Pb

• Au

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

• Photosynthesis

• Transpiration

• Respiration

• Digestion

What is Newton's second law of motion?

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

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

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

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

What is the powerhouse of the cell?

• Ribosome

• Chloroplast

• Mitochondrion

• Nucleus

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

• Carbon Dioxide

• Helium

• Nitrogen

• Oxygen

What is the difference between speed and velocity?

• Speed is scalar; velocity is vector (includes direction).

• Speed includes direction, while velocity does not.

• Velocity measures distance only.

• Speed is always greater than velocity.

What is the law of conservation of mass?

• Mass is conserved in chemical reactions.

• Mass can be created in chemical reactions.

• Mass is lost during physical changes.

• Mass is only conserved in physical reactions.

What is the primary function of the respiratory system?

• To circulate blood throughout the body.

• To facilitate gas exchange (oxygen and carbon dioxide) between the body and the environment.

• To digest food and absorb nutrients.

• To regulate body temperature through sweating.

What is the pH scale used to measure?

• The color of a solution.

• The acidity or alkalinity of a solution.

• The temperature of a solution.

• The density of a solution.

What is the difference between an element and a compound?

• A compound is a pure substance, while an element is a mixture of different substances.

• Elements can be broken down into simpler substances, while compounds cannot.

• An element consists of one type of atom, while a compound consists of two or more different elements chemically bonded together.

• An element can be made of multiple types of atoms, while a compound is made of a single type of atom.