PTA Science Fundamentals

Question 1

What are the three states of matter?

Accepted Answer

Solid, liquid, and gas

Answer

Earth, water, and fire

Answer

Hot, warm, and cold

Answer

Heavy, medium, and light

Question 2

What is the water cycle?

Accepted Answer

The continuous movement of water through evaporation, condensation, precipitation, and collection

Answer

Water flowing downhill

Answer

Rain falling once

Answer

Ocean currents only

Question 3

What is photosynthesis?

Accepted Answer

The process by which plants convert sunlight, water, and CO2 into glucose and oxygen

Answer

Plants absorbing water through roots

Answer

Animals digesting food

Answer

Rocks breaking down over time

Question 4

What is Newton's First Law of Motion?

Accepted Answer

An object at rest stays at rest and an object in motion stays in motion unless acted on by an external force

Answer

Force equals mass times acceleration

Answer

Every action has an equal and opposite reaction

Answer

Objects always slow down over time

Question 5

What is the difference between an element and a compound?

Accepted Answer

An element is a pure substance of one atom type; a compound is two or more elements chemically bonded

Answer

They are the same thing

Answer

Compounds are simpler than elements

Answer

Elements are always gases

Question 6

What is DNA?

Accepted Answer

Deoxyribonucleic acid — the molecule that carries genetic instructions for life

Answer

A type of protein

Answer

A vitamin

Answer

A blood cell