Grade 11 · Science · Physics

11th grade Quantum ideas and where they are used worksheet

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Quantum ideas and where they are used

Grade 11 Science Worksheet - Challenge Me

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Circle the best answer, or write your answer on the line.

With h = 6.62607015 × 10⁻³⁴ J·s and an electron mass of 9.1093837139 × 10⁻³¹ kg (CODATA), what is the wavelength of an electron at 1 × 10⁶ m/s, in nm, Ari?
With h = 6.62607015 × 10⁻³⁴ J·s and an electron mass of 9.1093837139 × 10⁻³¹ kg (CODATA), what is the wavelength of an electron at 2 × 10⁶ m/s, in nm, Bo?
With h = 6.62607015 × 10⁻³⁴ J·s and an electron mass of 9.1093837139 × 10⁻³¹ kg (CODATA), what is the wavelength of an electron at 0.5 × 10⁶ m/s, in nm, Esme?
Read this first
Photon diagram beside a short passage
“An MRI scanner uses a strong magnet and radio waves. Protons in the body's water line up in the field and give off radio signals that a computer turns into pictures. MRI uses no X-rays.” The diagram shows a proton's spin arrow lined up with a field arrow.
4.
In the passage, a scanner with a stronger magnet is used. What happens to the radio frequency it needs, Luz?
- It stays the same
- It goes down
- It goes up
5.
Milo reads an ad saying a “quantum bracelet” heals illness. Does quantum physics support this claim?
- Yes, because the ad uses a science word
- No: physics gives no support for it
- Yes, because bracelets touch the skin
6.
Noah says a “quantum leap” in physics means a huge jump. Agree or disagree?
- Disagree: it is a tiny, set step
- Agree: electrons leap far away from atoms
- Agree: quantum means huge
7.
Pia says a coin can be heads and tails at once because of superposition. Agree or disagree?
- Disagree: that happens in tiny systems
- Agree: a spinning coin is a quantum object
- Agree: tossing makes superposition
8.
How are a solar cell and an LED opposites, Ren?
- A solar cell stores light, and an LED stores current for later
- One turns light into current; the other, current into light
- They are the same device
9.
How does laser light differ from a light bulb's, Tala?
- It travels faster
- Its photons share one color, in step
- It is much hotter
10.
Why can electron microscopes see smaller details than light microscopes, Zee?
- Fast electrons have much shorter wavelengths
- Electrons are brighter
- They use bigger lenses

11th grade Quantum ideas and where they are used worksheet – printable — Print: 1 2 3 4 5 6

About this worksheet

Quantum ideas and where they are used. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

I can say what a quantum is (the smallest step an amount can change by) and that atoms have set energy levels, which give each element its own spectral lines.
I can explain, in plain terms, superposition (a qubit holds 0 and 1 until measured) and the uncertainty principle (position and momentum can't both be known exactly; this is nature, not poor tools).
I can describe how lasers, LEDs, solar cells and MRI scanners work, and find an LED's color from its gap, an MRI frequency from its field, and an electron's wavelength.
I can check a "quantum" claim against evidence.

Standard: none (TX)

Words to know

quantum: The smallest step an amount, like energy, can change by

superposition: Being in a mix of states, like 0 and 1, until measured

qubit: A quantum bit that can be in a superposition of 0 and 1

uncertainty principle: Position and momentum can't both be known exactly at once

energy gap: The energy step an electron drops across in an LED

Common mistakes

Your child multiplied. The wavelength is hc ÷ E: a bigger energy gap gives a shorter wavelength.

Your child divided by the field. The MRI frequency grows with the field: f = 42.577 MHz per tesla × B.

Your child used the speed as m/s, not millions of m/s. Keep the 10⁶ in λ = h ÷ mv.

Questions parents ask

What is the most common mistake with quantum ideas and where they are used?

Your child multiplied. The wavelength is hc ÷ E: a bigger energy gap gives a shorter wavelength.

Are these 11th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

More physics

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