Planetary Members of the Solar System

Earth

Earth's crust is made up of several elements: oxygen, 47 percent; silicon, 27 percent; aluminum, 8 percent; iron, 5 percent; calcium, 4 percent; magnesium, potassium and sodium, 2 percent. The crust is divided into huge plates that float on the mantle, the next layer.

Put the planets in order from smallest to largest according to diameter.

Jupiter (69,911 km / 43,441 miles) - 1,120% the size of Earth Saturn (58,232 km / 36,184 miles) - 945% the size of Earth Uranus (25,362 km / 15,759 miles) - 400% the size of Earth Neptune (24,622 km / 15,299 miles) - 388% the size of Earth Earth (6,371 km / 3,959 miles) Venus (6,052 km / 3,761 miles) - 95% the size of Earth Mars (3,390 km / 2,460 miles) - 53% the size of Earth Mercury (2,440 km / 1,516 miles) - 38% the size of Earth

Jupiter

Jupiter is made up predominantly of hydrogen.

Which planet has the shortest day?

Jupiter. It spins around on its axis once every 9 hr 55 min 29.69 sec. Jupiter has a small axial tilt of only 3.13 degrees, so no seasons.

Which planet is the biggest in our Solar System?

Jupiter. Jupiter's mass is more than 300 times that of Earth, and its diameter, at 140,000 km, is about 11 times Earth's diameter.

Name the planets in order from the sun.

MVEMJSUN Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune

What are the 4 smallest planets in our solar system?

Mercury, Mars, Venus, Earth

Which planet is the smallest in our solar system?

Mercury.

Which planet has the shortest year?

Mercury. One year on planet Mercury takes just 87.97 earth days. This means that if you are 10 years old on Earth you would be 40 years old in Mercury years or if you are 11 years old on earth you would be almost 46 years old on Mercury.

Which planet has the widest temperature variance?

Mercury. Since Mercury is the closest planet to the Sun, spins slowly, and does not have much of an atmosphere to trap heat, its temperature varies greatly. Mercury's temperatures can go between -279 Fahrenheit (-173 Celsius) at night to 801 Fahrenheit (427 Celsius) during the day. (This is hot enough to melt lead!)

Neptune

Neptune's atmosphere is made from about 80% hydrogen and 19% helium. It also contains a small amount water and methane, which give rise to the green-bluish color. The dark blue and bright white features of the atmosphere help distinguish Neptune from Uranus.

Which planet has the longest year?

Neptune. It is the furthest from the sun. 164.8 years (or 60,182 Earth days).

Mercury

Scientists believe that the interior structure of Mercury includes a metallic core, an intermediate rocky layer, and a thin brittle crust. The composition of Mercury is probably high in iron, although surface features indicate that volcanic activity once existed at the surface.

Mars

The dust that covers the surface of Mars is fine like talcum powder. Beneath the layer of dust, the Martian crust consists mostly of volcanic basalt rock. The soil of Mars also holds nutrients such as sodium, potassium, chloride and magnesium.

Venus

Venus is made up of a central iron core and a rocky mantle, similar to the composition of Earth. Its atmosphere is mainly made up of carbon dioxide (96%) and nitrogen (3%), with small amounts of other gases.

Which planet has the longest day?

Venus. Venus spins on its axis once every 243 earth days. Venus' day lasts longer than its orbit.

Saturn

second-largest and sixth planet from the Sun; has a complex ring system, at least 31 moons, and a thick atmosphere made mostly of hydrogen and helium

Uranus

The seventh planet from the sun. The ice giant Uranus is mostly composed of various ices, like water, ammonia and methane.