Physics Experiments and Concepts Quiz

What optical property is demonstrated when a laser beam is visible inside the Jell-O?

• Absorption

• Diffraction

• Scattering

• Refraction

Which country is the leading producer of aluminum?

• China

• India

• United States

• Australia

What happens to metals when they are bent back and forth repeatedly?

• They become more flexible

• They become stronger

• They change color

• They fatigue and weaken

What is the maximum elongation percentage of the stretchiest materials?

• 100%

• 500%

• 1000%

• 5000%

What is the main reason a balloon pops when skewered through the sides?

• The balloon is overinflated

• The skewer is too sharp

• The sides are thinner

• The sides are thicker

Why does a balloon with water not pop when held over a candle?

• Water absorbs the heat

• The balloon is thicker

• The candle is not hot enough

• The balloon is made of special material

What is the primary reason for using a balloon with water in the candle experiment?

• To absorb heat and prevent popping

• To change the color of the flame

• To make the balloon heavier

• To prevent the balloon from melting

What is triboluminescence?

• Light emission from chemical reactions

• Light emission from heat

• Light emission from friction

• Light emission from electricity

What causes the soap to spread out on the water surface in the milk experiment?

• Soap reacts chemically with water

• Soap is less dense and has lower surface tension

• Soap has a higher surface tension

• Soap is denser than water

What is the effect of soap on the surface tension of water?

• Makes water evaporate

• Increases surface tension

• Decreases surface tension

• Has no effect