Process of Science: Make a prediction from the theory of plate tectonics and then look to see if you can find an example on Earth that provides a test

What will be an ideal response?


One possibility is that we should see evidence in ancient material such as particular rocks or fossils that various parts of the land that we see today were in very different environments in the past, e.g., fossils indicating that parts of Antarctica were once very warm or that rocks on the top of mountains were once underneath the sea. Another prediction is that we could actually measure the drift of the continents with very precise measurements, and this is indeed now possible with modern technology.

Physics & Space Science

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Astronomers try to reconstruct our Galaxy's past from _____

A) its spherical component B) its disk component C) its spiral arms D) the stars of neighboring galaxies

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The CMB is perfectly uniform

a. True b. False Indicate whether the statement is true or false

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Heat Engines: A certain heat engine extracts 1.30 kJ of heat from a hot temperature reservoir and discharges 0.70 kJ of heat to a cold temperature reservoir. What is the efficiency of this engine?

A. 46% B. 54% C. 86% D. 27% E. 13%

Physics & Space Science

A system consists of N gas molecules, each with mass m. Their rms speed is vrms. Their total translational kinetic energy is:

A. (1/2)m(Nvrms)2 B. (1/2)N(mvrms)2 C. (1/2)mv2 rms D. (1/2)Nmv2 rms E. N [(1/2)mvrms] 2

Physics & Space Science