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- 1. Multiple ChoiceThe formation of elements is known as _________.nucleotidesSynthogenesisnuclear fissionnucleosynthesis
- 2. Multiple ChoiceThe first elements were formed in what is known as _________________.Big Bang NucleosynthesisStellar NucleosynthesisSupernova NucleosynthesisGenonucleosynthesis
- 3. Multiple ChoiceThe two elements formed in Big Bang Nucleosynthesis where __________________.hydrogen and lithiumhydrogen and heliumhydrogen and oxygenhelium and lithium
- 4. Multiple ChoiceThe key ratio found in the universe that confirms the Big Bang is _______.25% hydrogen and 75% helium75% hydrogen and 75% helium75% hydrogen and 25% lithium75% hydrogen and 25% helium
- 5. Multiple Choice________ nucleosynthesis happens in the center of stars and is where the elements helium through iron (Fe) are formed.Big BangStellarSupernovaSuperdupernova
- 6. Multiple ChoiceStellar nucleosynthesis stops at the element of iron because there are _________ in their nuclei.not enough protonsnot enough electronsnot enough protronsnot enough neutrons
- 7. Multiple ChoiceAll elements bigger than iron on the periodic table are formed in _________________.Big Bang NucleosynthesisStellar NucleosynthesisSupernova NucleosynthesisGenonucleosynthesis
- 8. Multiple ChoiceA star will spend ______ of it's life turning hydrogen into helium.100%99%90%50%
- 9. Multiple ChoiceThree elements made in the fusion of helium are ________________.hydrogen, helium, and lithiumcarbon, nitrogen, and oxygenhelium, nitrogen, and oxygencarbon, nitrogen, and iron
- 10. Multiple ChoiceWhen a star builds up too much iron, it ______.regeneratesstarts over burning hydrogendiesstarts unmaking iron and goes backwards
- 11. Multiple Choice
The rest of the elements on the periodic table (after iron) are cooked together in the massive star explosion called a ___________.
supernova
superduper nova
nova
big bang
- 12. Multiple Choice
What is this process?FissionFusionCombustion - 13. Multiple ChoiceWhere does this process occur in nature?Earth's coreSunAtmosphere
- 14. Multiple ChoiceWhen a young, developing star becomes massive enough and dense enough, the process of _______ begins.H --> He fusionHe --> C fusionHe --> C --> O fusionfission
- 15. Multiple ChoiceWhat are some of the outcomes of nuclear fusion?Produce larger materials from the collision of smaller materials.Release energy.Produce smaller materials from the collision of larger materials.Produce larger materials from the collision of smaller materials & Release energy
- 16. Multiple ChoiceIn nuclear fusion, smaller atoms are forced together to create larger atoms. Does this process release, absorb or maintain energy?Absorb energyMaintain energyRelease energy
- 17. Multiple ChoiceWhere does fusion occur naturally?UnderwaterAll around usIn the radioactive wasteOn the sun
- 18. Multiple Choice
What do stars produce?
Heat and light only.
Heat, light, and energy only.
Heat, Light energy, and natural elements.
Light only.
- 19. Multiple Choice
The creation of new elements or larger atoms from combining smaller ones, normally through fusion is....
Nuclear fission
Nuclear fusion
Nucleosynthesis
Equilibrium
- 20. Multiple Choice
What is the difference between chemical and nuclear reactions?
Chemical reactions produce more energy
They both conserve matter
They both are reactions
In nuclear reactions the identity of the elements changes and produces huge amounts of energy
- 21. Multiple Choice
Select all the statements that are true about Hydrogen (H) (hint there is more than one right answer!)
Hydrogen is the most abundant element in the known universe
New Hydrogen is being made in stars as we speak
Hydrogen is the initial fuel for stars
All the hydrogen has been around since the Big Bang
Hydrogen caused the universe to be created
- 22. Multiple Choice
When a star runs out of hydrogen, it changes dramatically. The star cools, gets larger, and becomes a red giant or supergiant depending on the mass of the star. In the largest stars what happens?
comets and meteorites eject new elements into the star
larger atoms like oxygen and iron form
multiple new stars are formed as the large star splits
red and blue light move around the core
- 23. Multiple Choice
The largest elements (all the way to Uranium) form during a supernova explosion.
true
false
- 24. Multiple Choice
How do elements like gold, copper, and lead end up on earth?
they flow through sunshine to the earth
as the earth gets close to a red giant, its gravity pulls these elements to the ground
supernova sends these elements into the interstellar matter and they end up on earth from there
these elements are made on earth by volcanic action
- 25. Multiple Choice
Your body is made up of many different elements. Where did those heavier elements, such as cobalt and molybdenum, come from?
volcanoes
solar wind
supernovae
sunspots
- Answer choicesTagsAnswer choicesTags