Science Concepts Quiz

What is the primary force that allows a siphon to work?

• Electricity

• Gravity

• Magnetism

• Friction

In the siphon demonstration, what is the key factor for the siphon to function properly?

• The tube must be made of metal

• The water must be colored

• The water level on one side must be lower

• The tube must be straight

Why does helium make your voice sound higher?

• It is a solid at room temperature

• It is less dense than air

• It is heavier than air

• It is more dense than air

What happens to your voice when you breathe sulfur hexafluoride?

• It becomes inaudible

• It stays the same

• It becomes lower

• It becomes higher

Why do bubbles float on sulfur hexafluoride?

• Bubbles are heavier than sulfur hexafluoride

• Bubbles are magnetic

• Bubbles are filled with helium

• Bubbles are less dense than sulfur hexafluoride