Physics Tricks and Concepts Quiz

What is the key factor that allows the forks to balance on the edge of a glass?

• The center of mass of the fork sculpture

• The shape of the glass

• The length of the match

• The weight of the forks

In the water rising experiment, what happens to the air inside the glass when the flame goes out?

• It expands and increases pressure

• It cools down and contracts

• It remains at the same temperature

• It heats up and expands

What happens to the water level when the match is covered in the water rising experiment?

• It stays the same

• It decreases

• It evaporates

• It increases

What is produced when a match burns that contributes to the water rising effect?

• Carbon monoxide

• Nitrogen

• Oxygen

• Water vapor

What role do nucleation sites play in the carbonated water and peanuts experiment?

• They prevent bubbles from forming

• They allow bubbles to form on smooth surfaces

• They dissolve the carbon dioxide

• They provide a surface for bubbles to form

In the carbonated water experiment, what causes the peanuts to rise to the surface?

• The water is heated

• The peanuts are magnetic

• The bubbles attach to the peanuts

• The peanuts are lighter than water

Why does the plate move up with the glass in the suction experiment?

• The plate is lighter than the glass

• The air pressure below the plate is higher

• The glass is heavier than the plate

• The plate is glued to the glass

What happens to the air pressure inside the glass during the suction experiment?

• It increases

• It fluctuates

• It decreases

• It remains constant

What is the reason a stick can be inserted through a balloon without popping it?

• The rubber is thicker at certain points

• The balloon is not fully inflated

• The balloon is made of thick rubber

• The stick is very sharp

What is the main reason the balloon does not pop when a stick is inserted?

• The stick is coated with oil

• The balloon is deflated

• The stick is blunt

• The rubber is thicker at the insertion points