How stars make the elements
Grade 9 Science Worksheet - Building Confidence
Circle the best answer.
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Where elements were mainly made (NASA)
Element Atomic number Main origin hydrogen 1 Big Bang helium 2 Big Bang carbon 6 star cores oxygen 8 star cores iron 26 massive stars and their supernovas gold 79 neutron-star collisions Where did most of the hydrogen atoms in a glass of water come from, by Ari's reading (NASA)?
- A supernova, like gold
- Earth's core long ago
- Fusion in the Sun's core
- The Big Bang
Where was most of the carbon in living things made, by Bo's reading (NASA)?
- In Earth's crust
- Inside stars, by fusing helium
- By splitting heavier atoms into carbon
- In the Big Bang
Where does NASA say much of the universe's gold may have been made, by Kira's reading?
- In collisions of neutron stars
- In Earth's core
- In the Sun's core
- In the Big Bang
According to the strip, where was iron (26) mainly made, by Jun's reading?
- In the Big Bang
- In stars like the Sun
- In massive stars and their supernovas
- On Earth
What is gold's atomic number on the strip, by Milo's reading?
- 6
- 79
- 197
- 26
In a star's core, helium fuses into which element next, by Noah's reading (NASA)?
- Hydrogen
- Iron, straight away
- Gold
- Carbon
Hydrogen, helium, carbon, oxygen, neon, magnesium, silicon, blank. Which element is the last one a massive star's core fuses up to, by Pia's reading (NASA)?
- Gold
- Iron
- Carbon
- Uranium
Drawing of two small nuclei and one larger nucleus, with an arrow between them. What does fusion in stars do to atomic nuclei, by Ren's reading?
- Joins lighter nuclei into heavier ones
- Splits heavy nuclei apart into lighter ones
- Melts nuclei into a liquid
- Turns nuclei into electrons
Periodic-table strip with its first three boxes outlined. Which list names the elements made in the Big Bang, by Tala's reading (NASA)?
- Hydrogen, carbon and oxygen
- Iron and gold
- Hydrogen, helium and a little lithium
- The whole table, from hydrogen up to uranium
NASA says Big Bang element-making had mostly finished after a few minutes. How long did it last, by Zee's reading?
- A few minutes
- It is still going on
- About one day
- A few billion years