How does the gravity of an object affect light?
A) Light doesn't have mass; therefore, it is not affected by gravity.
B) Light coming from a compact massive object, such as a neutron star, will be redshifted.
C) Light coming from a compact massive object, such as a neutron star, will be blueshifted.
D) Visible light coming from a compact massive object, such as a neutron star, will be redshifted, but higher frequencies such as X-rays and gamma rays will not be affected.
E) Less energetic light will not be able to escape from a compact massive object, such as a neutron star, but more energetic light will be able to.
Question 2
The rotation periods of Venus, Jupiter, Saturn, Uranus and Neptune are difficult to determine because:
A) they rotate so fast.
B) they are all gas giants.
C) they are so far away from the Sun.
D) their surface features are obscured by their atmospheres.
E) each one has a large satellite that interferes with this measurement.
How phytochrome acts as a molecular light switch.
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