MEA 100 Test 1 Questions and answers already Graded A+ Which of the following was NOT used by scientists as evidence for the Big Bang Theory? A. Microwave background radiation B. Abundance of hydrogen and helium C. The red shift of galaxies D. Cosm

MEA 100 Test 1 Questions and answers already Graded A+ Which of the following was NOT used by scientists as evidence for the Big Bang Theory? A. Microwave background radiation B. Abundance of hydrogen and helium C. The red shift of galaxies D. Cosmic infrared radiation D. Cosmic infrared radiation Approximately, how long ago do scientists believe the Earth was formed? A. 4.6 hundred thousand years B. 4.6 thousand years C. 4.6 million years D. 4.6 billion years E. None of the above D. 4.6 billion years Which gives the best estimate of the age of the Earth? A. Radioactive dating of meteorites B. Temperature gradient of the Earth as it cools C. Radioactive dating of the oldest known rock outcrops on Earth D. Speed at which the Earth moves