Fission, fusion and how radiation is used
Grade 10 Science Worksheet - Building Confidence
Circle the best answer, or write your answer on the line.
A neutron strikes uranium with mass number 235. It splits into barium with mass number 141, krypton with mass number 92, and some neutrons. How many neutrons, Ari?
A neutron strikes uranium with mass number 235. It splits into xenon with mass number 140, strontium with mass number 94, and some neutrons. How many neutrons, Bo?
A neutron strikes uranium with mass number 235. It splits into barium with mass number 144, krypton with mass number 89, and some neutrons. How many neutrons, Esme?
Read this first
Nuclear notation: a splitting and a joining (OpenStax §21.4)
process equation where it happens fission (splitting) uranium-235 + neutron → barium-141 + krypton-92 + 3 neutrons nuclear power plants fusion (joining) 4 hydrogen-1 → helium-4 + 2 positrons the Sun's core Using the card, which process powers the Sun, Kira?
- Burning coal
- Fusion
- Fission
Using the card, what does the Sun's fusion make from hydrogen, Luz?
- Helium
- Uranium
- Carbon dioxide
What do nuclear power plants use to make heat, Milo?
- Burning of coal
- Fission of uranium-235
- Fusion of hydrogen into helium
What are medical tracers such as technetium-99m used for, Noah?
- Showing organs in scans
- Powering the hospital lights
- Dating old bones
What is carbon-14 used for, Pia?
- Lighting the Sun
- Dating once-living things
- Making electricity in power plants
In a nuclear power plant, what does the heat from fission do, Ren?
- Boils water into steam for turbines
- Lights the bulbs in our homes directly
- Turns into uranium again
What controls the rate of fission in a reactor, Tala?
- Fans that blow on the core
- Control rods that absorb neutrons
- Adding more coal to it