Earth Science Unit 1

Letter D is identifying which layer of the Earth?

What two planets are located in the habitable zone

Earth and Mars are both in the habitable zone, yet Mars cant support life as we know it. Why?

Process found in stars where heavier elements are formed by squeezing multiple nuclei together

When early Earths atmosphere formed, which of the following gases were lost due to weak gravity

Early fresh water oceans became salty when

Letter C is identifying which layer of the Earth?

Letter A is identifying which layer of the Earth?

Which of the following factors may decrease salinity in the oceans?

What do meteorites suggest about the Earth's composition?

Young Earth formed a core, mantle, and crust in a process called?

Which best describes how the planets of the solar system formed?

The second atmosphere that formed above Earth was due to what process?

The height above the pan is the ________ variable.

Letter B is identifying which layer of the Earth?

Variables held constant in order to determine the relationship between two other variables

The passage of direct energy, by direct contact

What process was responsible for the development of free oxygen in Earth's atmosphere?

What is the most probable cause for the decrease in oxygen around 300 MYA?

What is evidence of Earth's age?

Scientists have learned about Earth's composition by:

The diameter of the impact is the ________ variable?

Earth's magnetosphere is most likely evidence for