Quantum ideas and where they are used
Grade 11 Science Worksheet
Circle the best answer, or write your answer on the line.
Protons in water respond at 42.577478461 MHz per tesla (CODATA). What radio frequency does an MRI scanner with a 1.5 T magnet use, to 0.01 MHz, Ari?
Protons in water respond at 42.577478461 MHz per tesla (CODATA). What radio frequency does an MRI scanner with a 3 T magnet use, to 0.01 MHz, Bo?
Protons in water respond at 42.577478461 MHz per tesla (CODATA). What radio frequency does an MRI scanner with a 0.55 T magnet use, to 0.01 MHz, Esme?
Read this first
Photon diagram beside a short passage
“A qubit can be in a superposition of 0 and 1 until it is measured; then it gives one answer. Measuring a quantum signal disturbs it, so someone listening in on a quantum message can be noticed.” The diagram shows a qubit arrow between 0 and 1.
In the passage, what can a qubit do that an ordinary bit can't, Jun?
- Work without electricity
- Be in a superposition of 0 and 1
- Store far more files than a hard drive
In the passage, what happens when a qubit is measured, Kira?
- It stays both 0 and 1, forever after
- It gives one answer, 0 or 1
- It breaks
What does the uncertainty principle say, in plain terms, Milo?
- Small particles can't be measured by any tool or method
- Position and momentum can't both be known exactly
- Electrons don't exist
Would better instruments get around the uncertainty principle, Noah?
- No: it is part of nature
- Yes: it is caused by poor tools
- Yes, with a bigger magnet
Why does glowing hydrogen give off only certain colors, Ren?
- Its atoms are colored
- Its gas is too cold to glow in other colors
- Its electrons have fixed energy levels
How do astronomers know which elements are in a distant star, Tala?
- From the star's size
- From its temperature alone
- From the colored lines in its light
Why does a neon sign glow red-orange, Zee?
- The glass is painted
- Neon is hot like a flame
- Neon's electrons drop between its levels