OAA Science

Question 1

What is the primary source of energy for the Earth?

Accepted Answer

The Sun

Answer

The moon

Answer

Geothermal energy

Answer

Wind

Question 2

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

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Osmosis

Answer

Digestion

Question 3

What is the chemical formula for water?

Accepted Answer

H₂O

Answer

CO₂

Answer

O₂

Answer

H₂

Question 4

What is the force that pulls objects toward the center of the Earth?

Accepted Answer

Gravity

Answer

Magnetism

Answer

Friction

Answer

Inertia

Question 5

What is the basic unit of life?

Accepted Answer

Cell

Answer

Atom

Answer

Molecule

Answer

Organism

Question 6

What gas do plants take in during photosynthesis?

Accepted Answer

Carbon dioxide

Answer

Oxygen

Answer

Nitrogen

Answer

Hydrogen

Question 7

What is the process of cell division called?

Accepted Answer

Mitosis

Answer

Meiosis

Answer

Fission

Answer

Fusion

Question 8

What is the smallest planet in our solar system?

Accepted Answer

Mercury

Answer

Venus

Answer

Earth

Answer

Mars

Question 9

What is the main function of the heart?

Accepted Answer

To circulate blood

Answer

To digest food

Answer

To control body temperature

Answer

To filter waste