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 was most of the carbon in living things made, by Bo's reading (NASA)?
- In the Big Bang
- By splitting heavier atoms into carbon
- In Earth's crust
- Inside stars, by fusing helium
Where does NASA say much of the universe's gold may have been made, by Kira's reading?
- In collisions of neutron stars
- In the Big Bang
- In Earth's core
- In the Sun's core
According to the strip, where was iron (26) mainly made, by Jun's reading?
- In massive stars and their supernovas
- In the Big Bang
- In stars like the Sun
- On Earth
Which element on the strip was made mainly in the Big Bang, by Luz's reading?
- Carbon
- Helium
- Gold
- Iron
In a star's core, helium fuses into which element next, by Noah's reading (NASA)?
- Hydrogen
- Carbon
- Iron, straight away
- Gold
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)?
- Carbon
- Iron
- Gold
- 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?
- Melts nuclei into a liquid
- Turns nuclei into electrons
- Joins lighter nuclei into heavier ones
- Splits heavy nuclei apart into lighter ones
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, helium and a little lithium
- Hydrogen, carbon and oxygen
- The whole table, from hydrogen up to uranium
- Iron and gold
NASA says Big Bang element-making had mostly finished after a few minutes. How long did it last, by Zee's reading?
- About one day
- It is still going on
- A few billion years
- A few minutes
Most atoms just after the Big Bang were which element, by Esme's reading (NASA)?
- Iron
- Carbon
- Hydrogen
- Helium