Semester 2 Physics Final Part 1

The maximum displacement of a particle by a wave is called...

• amplitude
• period
• frequency
• wavelength

As the kinetic energy of the molecules in a substance increases, the

• potential energy of the substance changes
• temperature remains the same
• temperature of the substance increases
• temperature of the substance decreases

The transfer of energy to a body by the application of a force that causes the body to move in the direction of the force is called...

• power
• mechanical advantage
• distance
• work

The SI unit for speed is...

• Δv/t
• ft/s²
• mph.
• m/s.

The speed of a sound wave...

• depends on amplitude
• depends on the medium
• depends on wavelength
• none of the above

Sound waves are...

• longtiudinal waves
• polarized waves
• circular waves
• transverse waves

Convection currents rise in air because

• hot air has less friction
• hot air rises and cold air remains stagnant
• cool air descends and hot air rises
• the molecules in hot air move faster

What happens when a car slows down and velocity changes?

• positive acceleration
• negative acceleration
• resultant acceleration
• constant acceleration

When an object slows down, its acceleration is... 

• constant
• negative
• positive
• centripetal

Which of the following temperatures is impossible to measure?

• -50°C
• -85°F
• 545°F
• -20 K