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1. The age of the universe is estimated by:
- the age of subatomic particles as determined by radioactive decay
- the rate at which galaxies are moving away from one another
- the age of comets formed in interstellar space
- the temperature of the universal background radiation
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Other questions in this quiz
2. Which of the following statements about a scientific theory is not true?
- It is testable
- It is conjecture or guess
- It has a large body of supporting knowledge
- It is an explanation for some natural phenomena
3. At the moment of the Big Bang there was no ________, there was only ________.
- nuclear power, matter
- matter, weak nuclear forces
- matter, energy
- gravity, energy
4. The terrestrial planets are
- Earth, Mars, and Jupiter
- Mercury, Venus, Earth and Mars
- Jupiter, Saturn, Uranus and Neptune
- Mercury, Earth, Mars, and Pluto
5. Most scientists argue that the greatest environmental problem facing the world today is
- the ozone hole
- overpopulation
- climate change
- water pollution
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