Me its due today you dont have to awnser them all

1. when a star reaches the black hole stage of its life,

a) it is a very old star

b) it will give off new energy

c)it will grow in size

d) it is a very young star

2. which of the following can be thought of as opposites? (3 points)

a) white dwarf and brown dwarf

b) black hole and protostar

c) neutron star and pulsar

d) red giant and blue giant

3. which statement is true concerning the evidence for black holes? (3 points)

a) scientists can see black holes with powerful telescopes.

b) scientists can see the effect of black holes on nearby stars.

c) scientists can see trails left in space by black holes.

d) there is no evidence for black holes.

1 = A

2 = B

3 =  B

Explanation:

1) Black holes occur when really big stars collapse on themselves. And, in order to get big, the star has to be an old one.

2) A black hole is something huge that swallows up everything, while a protostar is just the very beginning of a star.

3) Scientist can't truly know for sure, but they can infer about them due to the effects of the surrounding areas.

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thinking it would be physical characteristics