Questions and Answers
What is the estimated age of the universe according to the Big Bang Theory?
Which of the following planets has the highest escape velocity?
What is the primary component of Venus's atmosphere?
Which planet is most similar in size and composition to Earth?
Signup and view all the answers
Which of these planets has the longest orbital period around the Sun?
Signup and view all the answers
What is the density of Mars in kg/m3?
Signup and view all the answers
Which planet has an average distance from the Sun of 149.6 million kilometers?
Signup and view all the answers
What is the length of a day on Venus in hours?
Signup and view all the answers
Study Notes
Origin of the Universe
- The Big Bang Theory is the predominant model for the universe's origin, proposing that it began 13.8 billion years ago from a small, dense, and hot mass.
- This theory explains the expansion and evolution of the universe over billions of years.
Comparison of Terrestrial Planets
-
Venus
- Mass: 4.87 x 10^24 kg
- Diameter: 12,104 km
- Density: 5,243 kg/m³
- Gravity: 8.9 m/s²
- Escape Velocity: 10.4 km/s
- Surface Pressure: 92 atm, primarily composed of 96% CO₂
- Distance from the Sun: 108.2 million km
- Orbital Period: 224.7 days
- Orbital Velocity: 35 km/s
- Length of Day: 5,832 hours
-
Earth
- Mass: 5.97 x 10^24 kg
- Diameter: 12,742 km
- Density: 5,514 kg/m³
- Gravity: 9.8 m/s²
- Escape Velocity: 11.2 km/s
- Surface Pressure: 1 atm, with 21% O₂ and 77% N
- Distance from the Sun: 149.6 million km
- Orbital Period: 365.3 days
- Orbital Velocity: 29.8 km/s
- Length of Day: 24 hours
-
Mars
- Mass: 0.639 x 10^24 kg
- Diameter: 6,779 km
- Density: 3,933 kg/m³
- Gravity: 3.7 m/s²
- Escape Velocity: 5 km/s
- Surface Pressure: 0.01 atm, with 95% CO₂ and 2.7% N
- Distance from the Sun: 227.9 million km
- Orbital Period: 687 days
- Orbital Velocity: 24.1 km/s
- Length of Day: 25 hours
General Characteristics of Terrestrial Planets
- Venus, Earth, and Mars are classified as inner terrestrial or "rocky" planets, reflecting similarities in composition and density.
- Venus is often referred to as Earth's twin due to its comparable size and mass.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge about the origins of the universe and the characteristics of the solar system. This quiz covers topics such as the Big Bang Theory and comparative planetary statistics. Perfect for students and astronomy enthusiasts alike!
