Quantum Mechanics Exit Ticket

What does wave-particle duality mean?

• Light can only be a wave
• Light and particles act like both waves and particles

• Waves are made of particles
• Particles travel in pairs

Which experiment showed that particles act like waves?

• Flame test
• Photoelectric effect
• Double-slit experiment
• Light reflection experiment

In the double-slit experiment, what did the particles do?

• Bounce off the wall
• Make a wave pattern like they interfered with themselves
• Disapper
• Stop moving

What is superposition?

• When particles spin
• When two particles hit each other
• When a particle can be in more than one state or place at once
• When something floats

What does the photoelectric effect show about light?

• It’s only a wave
• It acts like a particle that can knock out electrons
• It’s made of atoms
• It can melt metal

What are the tiny packets of light energy called?

• Electrons
• Atoms
• Photons
• Quarks

In the photoelectric effect, what happens when light hits metal?

• The metal glows
• Electrons are knocked out
• The metal disappears
• It turns into gas

What is the Heisenberg Uncertainty Principle about?

• Waves moving fast
• Not being able to know exact position and speed of a particle at the same time
• Electrons slowing down
• Gravity in space

Why can’t we know both where a particle is and how fast it’s going?

• It moves too slow
• Measuring one messes up the other
• Particles don’t move
• The tools are broken

Why is quantum mechanics different from regular physics?

• It only studies space
• It deals with tiny particles that act weird (like waves and particles)
• It’s easier to predict
• It only uses magnets