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, why can listening in on a quantum message be noticed, Luz?
- Listeners give off light
- Measuring it disturbs it
- Quantum messages are louder
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?
- Yes, with a bigger magnet
- No: it is part of nature
- Yes: it is caused by poor tools
Why don't we notice the uncertainty principle with a rolling ball, Pia?
- Balls are much too smooth for the effect to show
- The effect is far too small at that size
- Balls aren't made of atoms
How do astronomers know which elements are in a distant star, Tala?
- From its temperature alone
- From the star's size
- 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