Free online courseGeneral Astronomy

Conteúdo do Curso

• Video class: General Astronomy: Lecture 1 - Introduction

  0h57m

• Exercise: What unit of measurement is used to describe the average distance between the Earth and the Sun?

• Video class: General Astronomy: Lecture 2 - The Ancient Views of the Heavens

  0h26m

• Exercise: According to ancient Greek beliefs, which celestial body did NOT exhibit retrograde motion?

• Video class: General Astronomy: Lecture 3 - The Copernican Revolution

  0h23m

• Exercise: What was the key flaw in Copernicus's model that affected its accuracy in predicting planetary positions?

• Video class: General Astronomy: Lecture 4 - Making Sense of the Universe

  0h40m

• Exercise: What law explains why passengers feel no sensation of motion while traveling in an airplane on a smooth flight?

• Video class: General Astronomy: Lecture 5 - Patterns in the Night Sky

  0h35m

• Exercise: How do astronomers define the term 'constellation'?

• Video class: General Astronomy: Lecture 6 - The Reason for Seasons

  0h23m

• Exercise: What causes the varying lengths of daytime and nighttime experienced on Earth?

• Video class: General Astronomy: Lecture 7 - Eclipses and the Motion of the Moon

  0h31m

• Exercise: What term describes the moon's rotation that results in the same hemisphere always facing Earth?

• Video class: General Astronomy: Lecture 8 - A Tour of the Solar System

  0h41m

• Exercise: Which planet's orbit is most nearly a perfect circle?

• Video class: General Astronomy: Lecture 9 - The Origin of the Solar System

  0h25m

• Exercise: What process explains how the gravitational energy of a contracting cloud of gas is converted into thermal energy during the formation of a star?

• Video class: General Astronomy: Lecture 10 - The Formation of the Planets

  0h28m

• Exercise: Which region of the early solar nebula was cold enough for hydrogen compounds such as water, methane, and ammonia to condense into solid ices, thus setting the stage for the formation of jovian planets?

• Video class: General Astronomy: Lecture 11 - An Introduction to Planetary Geology

  0h42m

• Exercise: Which factor is the most significant in determining the geological activity of a terrestrial world?

• Video class: General Astronomy: Lecture 12 - Geology of the Terrestrial Planets

  0h38m

• Exercise: What is the primary reason the Mare regions on the Moon have fewer craters compared to the Highlands?

• Video class: General Astronomy: Lecture 13 - The Unique Geology of Earth

  0h23m

• Exercise: What is the primary reason for the constant shaping and reshaping of Earth's surface?

• Video class: General Astronomy: Lecture 14 - An Introduction to Planetary Atmospheres

  0h25m

• Exercise: What is the primary reason Venus has such high surface temperatures?

• Video class: General Astronomy: Lecture 15 - Earth's Atmospheric Structure and Magnetic Field

  0h29m

• Exercise: Which atmospheric layer of Earth is characterized by an increase in temperature with altitude due to the absorption of ultraviolet radiation by ozone?

• Video class: General Astronomy: Lecture 16 - Atmospheres of the Terrestrial Planets

  0h30m

• Exercise: How do the exospheres of the Moon and Mercury contribute to the appearance of the sky on their surfaces during daylight?

• Video class: General Astronomy: Lecture 17 - Earth's Atmospheric History and Climate Change

  0h40m

• Exercise: Which human activity has been responsible for the increase in carbon dioxide levels affecting the Earth's climate according to the lecture?

• Video class: General Astronomy: Lecture 18 - The Nature of Light

  0h27m

• Exercise: What is the speed of light in a vacuum?

• Video class: General Astronomy: Lecture 19 - Learning From Light

  0h31m

• Exercise: When astronomers observe the spectrum of a distant star, what can they determine about the star from the presence of absorption lines in its spectrum?

• Video class: General Astronomy: Lecture 20 - Why the Sun Shines

  0h34m

• Exercise: Which of the following is NOT a reason why the Sun's core temperature sustains nuclear fusion?