Remember that water at 4º C has a density of 1 g/cm3. Would the substance from the previous question sink or float if placed in a glass of water? Note: I will double check this question and grade it based on the density you determined in the previous question.

Which of the following is an observation used to develop the initial hypothesis for the Big Bang theory?

After testing a hypothesis, you determine that the results of the test support your hypothesis. What is your next step according to the scientific method?

After rejecting the hypothesis for continental drift, scientists had to develop a new hypothesis to explain the motion of the plates. What lines of evidence, or new information, did these scientists have (that Alfred Wegener did not) that helped them to develop the theory of seafloor spreading and eventually plate tectonics?

____________ is the appearance of light reflected from a minerals surface.

______________ are a series of volcanic islands that form where two oceanic plates ______________.

Calcite, with a hardness of 3, will scratch quartz that has a hardness of 6. 

A theory is an untested idea used to explain observations.

Which of the following best describes our understanding of how the major features on Earth’s surface such as mountains, trenches, and volcanoes form?

Which of the following two planets are most similar to Earth in terms of size and density?