Review Flashcards 1.2 - Formation of Life

Front

All energy and matter in the universe was created in an event called __________.

Back

the Big Bang.

Front

Larger elements are formed when a star explodes. This is called

Back

a nova or supernova.

Front

What is the age of the earth?

Back

4.5 Billion Years

Front

Arrange these Earth events from oldest to youngest: Animals move to land, Largest mass extinction, Water arrives, Earliest plants

Back

Water arrives, Earliest plants, Animals move to land, Largest mass extinction

Front

Which of the following does NOT help scientists determine the age of something? Options: fossil remains, relative dating, radiometric dating, nuclear fusion.

Back

nuclear fusion.

Front

Which happened first in Earth's history?

Back

Water arrived on Earth

Front

What is it called when scientists use radioactive decay to find a rock's age?

Back

Radiometric dating

Front

The explosion of a massive star that creates heavier elements is called:

Back

Supernova

Front

What was the first element formed in the universe?

Back

Hydrogen

Front

When is a star born?

Back

when it's hot enough for hydrogen to fuse into helium