Respuesta :
Step by step solution :
(A) All stars will end their lives explosively as supernovae. False
Supernova is a star that undergo a sudden increase in brightness across the electromagnetic spectrum. It occurs when a super giant star collapses suddenly.
The stars having high mass ended their lives with supernovae but low masses stars star, the core part of the star is left. So, no all stars end their lives explosively as supernovae.
(B) Meteors were responsible for the extinction of the dinosaurs. True
Dinosaurs become extinct due to the impact of giant meteorite. This meteorite blocks sunlight for a longer time. As a result, plant eaters died and then meat eaters died.
So, this statement is correct.
(C) The Universe is considerably older than Earth. True
The universe is approximately 13.8 billion years old. So, we can say the universe is older than earth.
(D) All matter in the Universe was once confined to a single point. True
According to big bang theory the whole matter of universe is confined at a single point.
(E) Earth formed through a series of violent collisions. False
(F) There is no way of knowing how old the Universe might be. False
There can be two way to know the age of universe :
(1) By glancing the oldest stars.
(2) By measuring the rate at which the universe is expanding.
(G) Earth is much older than the rest of the Universe. False
(H) Earth and the Universe formed at about the same time. False
