Millionaire Sprint Round 1 (Physics edition)

($100) What is the freezing point of water?

• 0 K

• -273.15 °C

• 0 °C

• 100 °C

($200) The unit for frequency is...

• s

• Hz

• 1/s

• m/s

($300) The bending of light as it passes from one medium to another is known as...

• Reflection

• Refraction

• Diffraction

• Dispersion

($500) In which direction does heat tend to flow during the process of natural convection?

• Up

• Down

• Left

• Right

($1000) Which of the following is NOT considered a greenhouse gas?

• Methane

• Water vapour

• Nitrous oxide

• Nitrogen

($2000) The name for the property of a material that determines how much energy it takes to change the temperature of a unit mass of a substance by 1 degree is...

• refractive index

• latent heat

• albedo

• specific heat capacity

($4,000) In a mixture of hydrogen, oxygen and nitrogen as a given temperature, the molecules having the greatest average speed are those of:

• hydrogen

• oxygen

• nitrogen

• they all have the same speed on average

($8,000) A substance requires 625 kJ of heat to melt 12.5 kg of it. The latent heat is:

• 50 000 J/kg

• 50 J/kg

• 7 812.5 J/kg

• 7 812 500 J/kg

($16,000) Which of the following would NOT increase the rate of evaporation of a liquid?

• Increasing the volatility of the liquid

• Increasing the surface area of the liquid exposed to air

• Increasing the humidity of the surrounding air

• Increasing the temperature of the liquid

($32,000) The wavelength-intensity graph for two identical objects, object A and B, is provided. Which of the following statement is NOT true?

• Object A is brighter than object B

• Object A has more energy than object B

• Object A has a longer peak wavelength than object B

• Both objects A and B emit a range of wavelengths