Describe the concept of "red shift" and how this observation relates to theories that the universe is expanding
What will be an ideal response?
The red shift is the Doppler shift of light wavelengths produced when an object is moving away from the earth. The phenomena is based on characteristic emission wavelengths of hydrogen from distance stars shifted to longer wavelengths (toward the red), and the ubiquitous observation that all distance objects display a red shift, not a blue shift; indicating all distant objects are moving away from the earth, or away from initial "big bang"
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When a 1-N orange is dropped and freely falls, the net force on the orange is
A. 1 N. B. 10 N. C. 0 N. D. 0.1 N.
If we compress a thin layer and a thick layer so that they start buckling, which layer do you think starts to buckle first?
What will be an ideal response?
When water vapor condenses in the atmosphere, sensible heat is absorbed and converted to latent heat
Indicate whether the statement is true or false.
What vessel made the first continuous profile across the ocean?
A) USS Stewart B) HMS Challenger C) Meteor D) Mars Reconnaissance Orbiter