Study Guide

What triggers the initial collapse of the nebular cloud according to the Nebular Theory?

• A nearby supernova explosion

• The rotation of the cloud

• Cooling of the cloud

• Gravitational forces within the cloud

What role does solar radiation play in photosynthesis?

• It provides oxygen.

• It generates energy.

• It creates soil nutrients.

• It forms the plant cell walls.

Which characteristic is most common among Jovian planets?

• Thick atmospheres

• Solid surfaces

• Lack of rings

• Slow rotation speeds

Which of the following factors is most important in determining Earth's climate?

• Solar wind intensity

• Distance from other planets

• Amount of incoming solar radiation

• Rotation speed

Which of the following is NOT a terrestrial planet?

• Earth

• Venus

• Mars

• Neptune

The Earth's atmosphere protects life by:

• Absorbing harmful solar radiation

• Generating oxygen

• Creating the ozone layer

• Blocking gravity from the sun

Which of the following features is typical of terrestrial planets?

• Multiple rings

• High Density

• Many moons

• Thick layers of gas

What is the primary effect of solar radiation on Earth's climate?

• Causes volcanic activity

• Drives the water cycle

• Maintains tectonic plates

• Creates Earth's gravity

Kepler's First Law states that the sun is located at one of the ________ of a planet's elliptical orbit.

• Foci

• Centers

• Ends

• Equators

Kepler's Second Law is also known as the Law of:

• Ellipses

• Equal Areas

• Periods

• Gravity