Situational or eternal truth?

Question

explain why each of the following are situational truths and not eternal:

1. The sun will "rise" and "set" everyday

2. The speed of light is 299,792,458 Meters/ second

3. The Earth is round

4. The 3 interior angles of a triangle equal 180

5. The shortest distance between two points is a straight line

6. A circle is round

7. 2+2=4

8. Water is wet

Answer 1

they all are specific to one situation and accepted for each current situation. I think.

Answer 2

1)eternal (the sun will always rise and set)

2)eternal (the speed of light will never change)

3)eternal(the earth will not change shape)

4)situational(not all triangles have 3 interior angles that equal180)

5)not sure

6)eternal(a circle will always be round)

7) eternal (2+2 wll always be 4)

8) situational (water can be turned into vapor which is dry or ice which is dry)