6 Questions
Which of the following describes an element that has the same number of protons but a different number of neutrons?
Isotopes
According to the law stating that the size of redshift is directly proportional to the distance and speed of a star moving away from the observer on Earth, which law is being referred to?
Hubble's Law
Which event explained the origin of the universe from a singularity and exploded into a cloud of gas?
Big Bang
What is true about the composition of the universe after a few minutes of the Big Bang?
75% of hydrogen, 25% of helium, and trace amounts of lithium
Which statement is NOT true about nuclear reactions?
Nuclear fission is not related to nuclear reactions
What does a large redshift in the light from galaxies indicate?
They are moving away from Earth
Review questionnaire for a preliminary exam in physical science, with multiple-choice questions covering topics like isotopes, alpha particles, photons, and nuclear fusion. Instructions on how to choose the correct answer are included.
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