Podcast
Questions and Answers
Which planet has the highest surface temperature?
Which planet has the highest surface temperature?
Mars is larger than Earth.
Mars is larger than Earth.
False
What is the average temperature of Mars?
What is the average temperature of Mars?
-60°C (-80°F)
Jupiter is a ______________ giant planet.
Jupiter is a ______________ giant planet.
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Which planet has the longest day cycle?
Which planet has the longest day cycle?
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Saturn is the largest planet in the solar system.
Saturn is the largest planet in the solar system.
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What is the gravity of Neptune compared to Earth's?
What is the gravity of Neptune compared to Earth's?
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Mercury orbits the sun at a distance of approximately ______________ km.
Mercury orbits the sun at a distance of approximately ______________ km.
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Match the planets with their distances from the sun:
Match the planets with their distances from the sun:
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Which planet has the coldest temperature in the solar system?
Which planet has the coldest temperature in the solar system?
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Study Notes
Mercury
- Orbits the sun at a distance of approximately 58 million km (36 million miles)
- Smallest planet in the solar system with a diameter of 4,879 km (3031 miles)
- Second most dense planet with a day cycle lasting 58 days, but completes an orbit around the sun in 88 days
- Temperatures on the surface vary from 430°C (800°F) during the day to -180°C (-290°F) at night
- Gravity is approximately 38% of Earth's gravity, making it possible to weigh only 84lbs on Mercury
Venus
- Orbits the sun at a distance of approximately 107 million km (67 million miles)
- Diameter of 12,103 km (7520 miles)
- Hottest planet with surface temperatures reaching 465°C (900°F) due to its thick atmosphere of carbon dioxide and sulphuric acid clouds
- Surface features include thousands of volcanoes, mountains, and valleys, with a mountain similar in size to Mount Everest
- Completes a rotation around the sun in 225 days, with a day on Venus lasting 243 days on Earth
- Gravity is approximately 90% of Earth's gravity
Earth
- Orbits the sun at a comfortable distance of 149.6 million km (92.9 million miles)
- Diameter of 12,742 km (7917 miles)
- Most dense planet in the solar system
- Temperature varies depending on location and time of year, with the highest recorded temperature being 56.7°C (134.1°F) and the lowest being -89°C (-128°F)
- Completes a trip around the sun in 365 days, with a day lasting 24 hours
- Surface features diverse environments, including frozen, molten, greenery, wetlands, and dry areas
Mars
- Orbits the sun at an average distance of 228 million km (142 million miles)
- Diameter of 6,779 km (4212 miles), roughly half the size of Earth
- Average temperature of -60°C (-80°F), with temperatures varying greatly depending on location and time of year
- Gravity is approximately 62% lower than Earth's gravity
- Shares many similarities with Earth, making it an interesting planet for potential colonization
Jupiter
- Largest planet in the solar system, with a diameter of 139,820 km (86,880 miles)
- Gas giant with no firm surface, but a liquid metallic hydrogen ocean deep beneath the clouds
- Orbits the sun at an average distance of 778 million km (484 million miles)
- Completes an orbit around the sun in 12 years, with a day lasting just 10 hours
- Temperature within the clouds is approximately -145°C (-234°F), but reaches 24,000°C (43,000°F) near the core
- Gravity is approximately 2.4 times stronger than Earth's gravity
Saturn
- Gas giant planet with a diameter of 116,460 km (72,364 miles)
- Orbits the sun at a distance of 1.4 billion km (886 million miles)
- Completes an orbit around the sun in 29 years, with a day lasting just under 11 hours
- Has three layers of clouds, with temperatures ranging from -173°C to -113°C (-280°F to -270°F) in the upper layers
- Gravity is approximately 1.8 times stronger than Earth's gravity
Uranus
- Ice giant planet with a diameter of 50,724 km (31,518 miles)
- Orbits the sun at a distance of 2.9 billion km (1.8 billion miles)
- Completes an orbit around the sun in 84 years, with a day lasting 17 hours
- Majority of its mass comes from a hot, dense fluid of icy materials, making it difficult to land on the surface
- Average temperature is approximately -213°C (-353°F), but reaches 4,727°C (8,540°F) near the core
- Gravity is approximately 86% of Earth's gravity
Neptune
- Ice giant planet with a diameter of 49,244 km (30,598 miles)
- Orbits the sun at a distance of approximately 4.5 billion km (2.8 billion miles)
- Completes an orbit around the sun in 165 years, with a day lasting 16 hours
- Coldest planet in the solar system, with temperatures ranging from -218°C to -200°C (-360°F to -328°F)
- Surface gravity is close to Earth's, being approximately 1.14 times stronger
- Features intense storms that rage for weeks, with fast-moving dark vortex clouds
Mercury
- Orbits the sun at 58 million km (36 million miles) away
- Smallest planet with a diameter of 4,879 km (3031 miles)
- Has extreme temperature fluctuations: 430°C (800°F) during the day and -180°C (-290°F) at night
- Day cycle lasts 58 days, but orbits the sun in 88 days
- Gravity is 38% of Earth's gravity, with a weight equivalent to 84lbs
Venus
- Orbits the sun at 107 million km (67 million miles) away
- Has a diameter of 12,103 km (7520 miles)
- Hottest planet with surface temperatures reaching 465°C (900°F) due to thick atmosphere
- Features thousands of volcanoes, mountains, and valleys, including a mountain similar to Mount Everest
- Rotates slowly, with a day lasting 243 days on Earth and an orbit taking 225 days
Earth
- Orbits the sun at 149.6 million km (92.9 million miles) away
- Has a diameter of 12,742 km (7917 miles) and is the most dense planet
- Temperature varies depending on location and time of year, with extremes of 56.7°C (134.1°F) and -89°C (-128°F)
- Completes a trip around the sun in 365 days, with a 24-hour day
- Features diverse environments, including frozen, molten, greenery, wetlands, and dry areas
Mars
- Orbits the sun at 228 million km (142 million miles) away
- Has a diameter of 6,779 km (4212 miles), roughly half the size of Earth
- Average temperature is -60°C (-80°F), with varying temperatures depending on location and time
- Gravity is 62% lower than Earth's gravity, making it a potential candidate for colonization
- Shares many similarities with Earth
Jupiter
- Largest planet, with a diameter of 139,820 km (86,880 miles)
- Gas giant with no firm surface, but a liquid metallic hydrogen ocean beneath the clouds
- Orbits the sun at 778 million km (484 million miles) away
- Completes an orbit around the sun in 12 years, with a day lasting just 10 hours
- Temperature within the clouds is -145°C (-234°F), but reaches 24,000°C (43,000°F) near the core
- Gravity is approximately 2.4 times stronger than Earth's gravity
Saturn
- Gas giant planet with a diameter of 116,460 km (72,364 miles)
- Orbits the sun at 1.4 billion km (886 million miles) away
- Completes an orbit around the sun in 29 years, with a day lasting just under 11 hours
- Has three layers of clouds, with temperatures ranging from -173°C to -113°C (-280°F to -270°F) in the upper layers
- Gravity is approximately 1.8 times stronger than Earth's gravity
Uranus
- Ice giant planet with a diameter of 50,724 km (31,518 miles)
- Orbits the sun at 2.9 billion km (1.8 billion miles) away
- Completes an orbit around the sun in 84 years, with a day lasting 17 hours
- Majority of its mass comes from a hot, dense fluid of icy materials
- Average temperature is approximately -213°C (-353°F), but reaches 4,727°C (8,540°F) near the core
- Gravity is approximately 86% of Earth's gravity
Neptune
- Ice giant planet with a diameter of 49,244 km (30,598 miles)
- Orbits the sun at 4.5 billion km (2.8 billion miles) away
- Completes an orbit around the sun in 165 years, with a day lasting 16 hours
- Coldest planet in the solar system, with temperatures ranging from -218°C to -200°C (-360°F to -328°F)
- Surface gravity is close to Earth's, being approximately 1.14 times stronger
- Features intense storms that rage for weeks, with fast-moving dark vortex clouds
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Description
Explore the fascinating features of Mercury and Venus, including their orbits, sizes, temperatures, and gravity. Learn about the unique characteristics of these two planets in our solar system.