5.1 and 5.2 Space Quiz Review

Unlike planets, stars make their own light and glow very brightly. Stars are made mostly of what material?

• Very hot metal

• Glowing, hot gases

• Extremely hot rock

• Carbon and oxygen

Galaxies are classified by their shapes. This illustration below shows the shape of a nearby galaxy known as Andromeda. Which term is used to describe the Andromeda galaxy?

• Barred spiral

• Elliptical

• Spinning

• Spiral

Our solar system is located in the Milky Way galaxy. Which of the following images shows how the Milky Way would look if you could view it from the side instead of the top?

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A galaxy is composed of billions of stars held together by gravity. The illustration below shows one common type of galaxy. What type of galaxy is shown in the illustration?

• Barred spiral

• Elliptical

• Spinning

• Spiral

The diagram below shows the Milky Way galaxy. Which letter best shows the location of our solar system?

• W

• X

• Y

• Z

Ganymede is a moon of Jupiter. It is larger than Mercury and has a metallic core similar to Earth’s core. Which of these statements best explains why Ganymede is classified as a moon rather than a planet?

• It is too large to be called a planet.

• It orbits Jupiter instead of the sun.

• Its properties are different from Jupiter.

• It is farther from the sun than Mercury.

Saturn, Uranus, and Neptune are known as Jovian planets because they are similar to Jupiter. Which of these characteristics do these three planets have in common with Jupiter?

• a large solid core

• well-defined rings

• a thick gaseous atmosphere

• a density greater than Earth's density

The table below shows some of the characteristics of a planet. Which two characteristics would be most helpful for determining whether the planet is a gas giant or a rocky planet?

• length of day and color

• diameter and length of day

• color and number of moons

• number of moons and diameter

Ava is doing a project on planets in other solar systems. She learns about a planet, called Planet Z. Planet Z is very large, has a thick atmosphere, and has a low density. Which of these planets in our solar system is Planet Z most similar to?

• Earth

• Mars

• Mercury

• Saturn

Until 2006, Pluto was considered the solar system’s ninth planet. Pluto is now classified as a dwarf planet. Which of these properties of Pluto explains why it is classified as a dwarf planet?

• It does not orbit the Sun

• It is too far from Earth

• It is too small to be a planet

• It has other bodies in its orbit