You are heating a jar full of hydrogen and observing its spectrum. If you add more hydrogen to the jar, the position of spectral lines will change.
Answer the following statement true (T) or false (F)
False
Physics & Space Science
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Which of the following happens when a star runs out of hydrogen at its center?
A) The core of the star expands. B) The outer layers of the star heat up. C) The star moves toward the lower left in the Hertzsprung-Russell diagram. D) The stellar core becomes almost pure helium
Physics & Space Science
Which stellar population has highly elliptical orbits?
a. Pop I extreme b. Pop I intermediate c. Pop II intermediate d. Pop II extreme
Physics & Space Science
We know that any body more dense than water will sink in water. Why?
What will be an ideal response?
Physics & Space Science
The protective shells that many sea organisms grow are not minerals because they
A) are not calcium carbonate. B) are organic. C) are made of ooze. D) become compacted.
Physics & Space Science