7.9A Review

According to the table, what size ball would be the best choice to represent Earth if a 14 cm ball is used for Jupiter?

• 0.5 cm

• 1.2 cm

• 12 cm

• 16 cm

Made mostly of ice, fits best under which heading in the Venn diagram?

• Asteroid

• Meteor

• Comet

• Section X

Identify the planet on the chart above that would most likely be the coldest.

• Mercury

• Venus

• Earth

• Uranus

Which statement below accurately describes the movement of objects in our solar system?

• The Sun revolves around the planets, and moons rotate around planets.

• The planets revolve around the Sun, and moons revolve around the planets.

• The planets rotate around the Sun, and moons revolve around the planets.

• The moons rotate around planets, and planets revolve around the Sun.

Which of the following best describes meteors?

• A) Solids with irregular shapes, some of which are larger than Pluto, that mostly orbit the Sun between the orbits of Mars and Venus

• B) Solids that range in size from dust to small rocks that are scattered throughout the solar system, often due to the breakup of comets, that burn in a brief bright display when they enter Earth’s atmosphere

• C) Solids made of rock and ice with very elliptical orbits that originate beyond the orbit of Neptune and release gas and dust in a bright display that can last weeks when they pass close to the Sun

• D) Solids that orbit many planets in our solar system, many of which are asteroids or comets that have been caught by the gravitational pull of the more massive planet they orbit

Which statements below correctly describe an object located in our solar system? Select TWO correct answers.

• The Sun is the star at the center of our solar system. Its gravity holds our solar system together.

• The solar system has ten planets. The four closest to the Sun are rocky and have a moon, while the six outer planets are made of gases and have no moons.

• The solar system only contains the Sun and eight planets. Comets, meteors, and asteroids are not a part of the solar system.

• Jupiter is one planet in the solar system. It has many moons and a very large mass.

• Earth is one planet in the solar system. It is the only object in the solar system that has water in any form.

A student is using clay to make a model of the solar system. The student shapes the clay into different-sized spheres which are scaled to the actual size of the planets. Each sphere was placed on a platform, 5 cm apart, and in the correct order starting with the sun. This model is limited because it shows the-

• distance between each planet as being equal.

• size of the planets as being different.

• sun as being in the center of the solar system.

• shape of the planets as spheres.

 What is the primary difference between terrestrial and Jovian planets?  

• Option Terrestrial planets are larger and closer to the Sun.

• Jovian planets are rocky and smaller than terrestrial planets

• Terrestrial planets have no moons while Jovian planets have many

• Jovian planets are mostly gaseous and larger than terrestrial planets

Meteors, comets, asteroids, and moons are objects found in our solar system. Each has its own properties, location, and movement. Match the property, location, or movement with the correct celestial object. Write the letter of ONE correct answer in each box.

• located in a band between Mars & Jupiter

• asteroids

• orbit only a single planet

• comets

• located in Earth's atmosphere

• moons

• develop a “tail” when near the sun

• meteors

Tags

NGSS.MS-ESS1-3

Planets that are closer to the sun

• take more time to orbit
• take less time to orbit

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4