Physics and Measurement Quiz for 9th Grade

Which two terms describe the same change of state?

• Boiling and condensation
• Boiling and evaporation
• Solidification and condensation
• Solidification and evaporation

Why do smoke particles move randomly under a microscope?

• Hit by air particles
• Less dense than air
• Moved by convection currents
• Gain energy from light

How do you convert Celsius to Kelvin?

• Add 273
• Divide by 273
• Multiply by 273
• Subtract 273

When air is heated in a cylinder with a frictionless piston, what changes?

• Temperature and volume at constant pressure
• Temperature and pressure at constant volume
• Temperature, volume, and pressure
• Volume and pressure at constant temperature

What increases when a copper block's temperature rises?

• Number of copper atoms
• Melting point
• Internal energy
• Density

Which thermal process involves energetic molecules escaping from a liquid's surface?

• Boiling
• Brownian motion
• Condensation
• Evaporation

Which scenario primarily transfers energy through radiation?

• Heating water on a gas stove
• Energy from the Sun to Earth
• Heating room air with convection heater
• Lifting a glider with thermal currents

What happens to a spring's extension when more mass is added?

• Spring length decreases
• Spring length remains constant
• Spring extends further
• Spring contracts randomly

Which process involves a liquid changing directly to a solid?

• Melting
• Condensation
• Freezing
• Sublimation

What determines the pressure at different ocean depths?

• Water temperature
• Water salinity
• Water density
• Water depth