PHYSICAL SCIENCE- GRADE 12

Froggy Jumps

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Explores Big Bang and stellar nucleosynthesis.

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Rhenz Dalapag

Filipinas

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PHYSICAL SCIENCE- GRADE 12


Froggy Jumps PHYSICAL SCIENCE- GRADE 12Versión en línea Explores Big Bang and stellar nucleosynthesis. por Rhenz Dalapag 1 1. Which theory explains that the universe began from an extremely hot and dense point? a B. Inflation Theory b C. Big Bang Theory c A. Oscillating Theory 2 2. Who introduced the idea of a primeval atom or cosmic egg? a A. Georges Lemaître b C. Isaac Newton c B. Edwin Hubble 3 3. According to scientific estimates, how old is the universe? a B. 13.8 billion years b A. 4.6 billion years c C. 9 billion years 4 4. What radiation is considered the leftover heat from the early universe? a A. Infrared radiation b D. Cosmic microwave background radiation c B. Gamma radiation 5 5. What phenomenon shows that galaxies are moving away from each other? a A. Redshift b B. Parallax c C. Blue shift 6 6. Which element was formed in large amounts during Big Bang nucleosynthesis? a B. Hydrogen b A. Oxygen c C. Carbon 7 7. When did Big Bang nucleosynthesis mainly occur? a D. Within the first few minutes of the universe b B. After stars formed c A. During galaxy formation 8 8. What is produced when a proton combines with a neutron? a A. Electron b B. Alpha particle c C. Deuteron 9 9. Which light element was formed in trace amounts after helium? a C. Oxygen b B. Carbon c A. Lithium 10 10. What determines the identity of an element? a B. Number of neutrons b D. Atomic Mass or number of protons c A. Atomic number 11 11. Why were only light elements formed during the Big Bang? a C. Stars absorbed particles b A. The universe cooled too quickly c B. Gravity was absent 12 12. Why is cosmic microwave background radiation important evidence for the Big Bang? a B. It explains stellar fusion b C. It is residual radiation from the early universe c A. It shows galaxy collisions 13 13. Why did nuclear fusion stop shortly after the Big Bang? a A. Particles disappeared b D. Space stopped expanding c B. Temperature dropped below fusion levels 14 14. If the universe remained extremely hot longer, what would most likely happen? a A. No elements would form b D. More complex nuclei could have formed more elements c B. Only hydrogen would exist 15 15. A scientist observes redshift in distant galaxies. What does this indicate? a A. The universe is expanding b C. The universe is static c B. Stars are shrinking 16 16. Which observation best confirms Big Bang nucleosynthesis predictions? a A. Presence of iron in stars b C. Correct abundance of hydrogen and helium c B. Supernova explosions 17 17. Why were heavy elements not formed during the Big Bang? a A. Fusion reactions were unstable b D. Heat energy and temperature were insufficient c B. Neutrons were absent 18 18. Which combination of evidence best supports the Big Bang Theory? a D. Gravity and mass b B. Redshift and cosmic background radiation c A. Atomic models and isotopes 19 19. Which evidence is considered the strongest support for the Big Bang Theory? a B. Planetary motion b A. Cosmic microwave background radiation c C. Atomic structure 20 20. Which statement best summarizes Big Bang nucleosynthesis? a B. Heavy elements formed first b A. All elements formed instantly c C. Only light elements formed as the universe expanded and cooled 21 21. What process forms new elements inside stars? a A. Radioactive decay b D. Stellar nucleosynthesis c B. Big Bang nucleosynthesis 22 22. What force causes gas clouds to collapse into a protostar? a B. Radiation pressure b A. Gravity c C. Magnetism 23 23. What is the primary fuel of most stars? a B. Hydrogen b C. Carbon c A. Helium 24 24. What nuclear reaction powers stars? a C. Fusion b A. Fission c B. Ionization 25 25. What fusion chain occurs in the Sun? a B. CNO cycle b C. Alpha ladder c A. Proton–proton chain 26 26. What element accumulates in the core after hydrogen burning? a C. Oxygen b A. Helium c B. Carbon 27 27. What stage does a star enter when helium fusion begins? a A. White dwarf b B. Protostar c D. Red giant 28 28. What particle is absorbed in the alpha ladder process? a A. Proton b B. Alpha particle c C. Neutron 29 29. What is formed when a medium-mass star dies? a B. Supernova b C. Black hole c A. Planetary nebula 30 30. What stellar event produces elements heavier than iron? a A. Red giant expansion b C. Supernova explosion c B. Main sequence fusion

PHYSICAL SCIENCE- GRADE 12

Froggy Jumps

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PHYSICAL SCIENCE- GRADE 12Versión en línea

por Rhenz Dalapag

1. Which theory explains that the universe began from an extremely hot and dense point?

2. Who introduced the idea of a primeval atom or cosmic egg?

3. According to scientific estimates, how old is the universe?

4. What radiation is considered the leftover heat from the early universe?

5. What phenomenon shows that galaxies are moving away from each other?

6. Which element was formed in large amounts during Big Bang nucleosynthesis?

7. When did Big Bang nucleosynthesis mainly occur?

8. What is produced when a proton combines with a neutron?

9. Which light element was formed in trace amounts after helium?

10. What determines the identity of an element?

11. Why were only light elements formed during the Big Bang?

12. Why is cosmic microwave background radiation important evidence for the Big Bang?

13. Why did nuclear fusion stop shortly after the Big Bang?

14. If the universe remained extremely hot longer, what would most likely happen?

15. A scientist observes redshift in distant galaxies. What does this indicate?

16. Which observation best confirms Big Bang nucleosynthesis predictions?

17. Why were heavy elements not formed during the Big Bang?

18. Which combination of evidence best supports the Big Bang Theory?

19. Which evidence is considered the strongest support for the Big Bang Theory?

20. Which statement best summarizes Big Bang nucleosynthesis?

21. What process forms new elements inside stars?

22. What force causes gas clouds to collapse into a protostar?

23. What is the primary fuel of most stars?

24. What nuclear reaction powers stars?

25. What fusion chain occurs in the Sun?

26. What element accumulates in the core after hydrogen burning?

27. What stage does a star enter when helium fusion begins?

28. What particle is absorbed in the alpha ladder process?

29. What is formed when a medium-mass star dies?

30. What stellar event produces elements heavier than iron?