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What are the inner planets?. The four planets closest to the sun are known as the inner planets. Mercury, Venus, Earth, and Mars. Mercury This picture of Mercury was made by joining many smaller photos taken by Mariner 10 . No photos were taken of the area that looks smooth. . Mercury.
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What are the inner planets? The four planets closest to the sun are known as the inner planets. Mercury, Venus, Earth, and Mars
Mercury This picture of Mercury was made by joining many smaller photos taken by Mariner 10. No photos were taken of the area that looks smooth.
Mercury • Mercury is the planet closest to the Sun. • It is a small planet, a little bigger than Earth’s moon. • Mercury is covered with thousands of dents. The dents are shaped like bowls and are called craters. • Craters were made when meteorites crashed into Mercury’s surface long ago.
Venus • Venus is the second planetfrom the Sun. • It is about the same size as Earth, but Venus turns in the opposite direction. • Like Mercury, Venus is very hot and dry. • Unlike Mercury, Venus has an atmosphere made of thick, swirling clouds.
Using the chart, What is one reason people cannot live on Mercury or Venus? They are both too hot to live on!
Using the chart, how much longer is Venus’ Earth year? 137 years longer
Earth • Earth, our home, is the third planet from the Sun. • It is also the solar system’s largest rocky planet. • Earthis the only planet that has liquid water on its surface. In fact, most of Earth’s surface is covered with water. • Earth is the only planet in the solar system known to support life.
Earth’s Moon • Moons are satellites of planets. • A satellite is an object that orbitsanother object in space. • Just as planets revolve around the Sun because of gravity, moons revolve around planets. • Earth has one large moon. • The diameter of the Moon is about one-fourth the diameter of Earth.
Mars • The fourth planet from the Sun is Mars. • The rocks and soil that covermuch of Mars contain the mineraliron oxide. • This mineral is reddish-brownin color. It is the same material that makes up rust. • This has given Mars its nickname, the "Red Planet."
Why is the average surface temperature considerably lower on Mars compared to Earth It is farther from the sun.
The Four Inner Planets Mercury Earth Venus Mars
Quiz Time! Let’s see how you do locating the planet!
Find the planet This Planet has an atmosphere made of thick, swirling clouds. Earth Venus Mars
Find the planet This planet is closest to the sun. Earth Mercury Mars
Find the planet This is the fourth planet from the sun. Earth Venus Mars
Find the planet This is the largest of the inner planets. Earth Venus Mercury
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