Earth Science Semester 1 Final Review

Front

A planet that has cooled will have the ____ dense materials in the center and the _____ dense materials on the surface.

Back

more, less

Front

What type of star covers all ranges of brightness and temperature on the HR Diagram?

Back

Main-sequence stars

Front

What information does a star's spectrum offer about the star?

Back

chemical composition

Front

Nucleosynthesis is the formation of heavier elements from lighter elements. All elements heavier than Li have been formed:

Back

in stars more massive than the sun

Front

What most likely caused the mass extinction of dinosaurs and other major species of that era? Options: global warming, an ice age, none of the above

Back

an asteroid collision

Front

The most precise form of dating rocks on Earth would be ___.

Back

radioactive dating

Front

All elements heavier than C formed ____.

Back

in the cores of massive stars

Front

What is the area of the orbit where the planet is moving the fastest?

Back

A to B

Front

Nucleosynthesis is the formation of heavier elements from lighter ones. Which of the following is an example of nucleosynthesis? He atoms fusing together to create C, the formation of electromagnetic radiation because of H fusion, the release of heat from the formation of He, the bonding of H to O to make water.

Back

He atoms fusing together to create C

Front

An asteroid can best be described as ______.

Back

a big rock in space