Understanding Temperature and Thermometers

What does temperature measure in a substance?

• The total number of particles

• The volume of the substance

• The average kinetic energy of particles

• The color of the substance

Which of the following statements is true about particles in a hot object compared to a cool object?

• Particles in a hot object have lower kinetic energy

• Particles in a hot object move slower

• Particles in a hot object are at rest

• Particles in a hot object have higher average kinetic energy

What fundamental law of nature do thermometers rely on to measure temperature?

• Energy is created in colder systems

• Energy flows from hotter to colder systems

• Energy remains constant in all systems

• Energy flows from colder to hotter systems

What happens to the liquid in a thermometer when it is heated?

• The liquid solidifies

• The liquid contracts

• The liquid evaporates

• The liquid expands

Why do bridges use expansion joints?

• To reduce construction costs

• To increase structural strength

• To allow for thermal expansion

• To prevent water accumulation

What is the freezing point of water on the Celsius scale?

• 100 degrees

• 0 degrees

• 32 degrees

• 212 degrees

How many degrees are there between the freezing and boiling points of water on the Fahrenheit scale?

• 100 degrees

• 180 degrees

• 212 degrees

• 32 degrees

What reference points are used to define the Celsius scale?

• 0 and 32 degrees

• 32 and 212 degrees

• 0 and 100 degrees

• 100 and 212 degrees

Which temperature scale is part of the metric system?

• Fahrenheit

• Kelvin

• Celsius

• Rankine

What is the boiling point of water on the Fahrenheit scale?

• 100 degrees

• 180 degrees

• 212 degrees

• 32 degrees