Physical Properties, Locations, and Movements of Objects That Comprise the Solar System

The force of gravitational attraction between the Sun and Venus could be increased by reducing which of the following?

• The speed of the orbit of Venus

• The mass of the Sun and Venus

• The period of rotation of the Sun

• The distance between the Sun and Venus

The orbital motions of the objects in the solar system are the direct result of which of the following features of the Sun?

• Its chemical composition

• Its gravitational pull

• Its brightness

• Its magnetic field

Which of the following aspects of the solar system contributes most to the motion of the planets?

• Radiation from nearby stars

• Gravitational attraction of the sun

• Magnetic field around the planets

• Friction with the atmosphere

Which of the following is the most accurate description of the relationship between components of the universe?

• Starts contain several solar systems

• Galaxies contain many stars

• Solar systems contain many galaxies

• Stars contain a few galaxies

Gravity is responsible for which of the following characteristics of a galaxy?

• The color of light it emits

• Its location within the universe

• The size of its largest stars

• The motion of the objects within it

Which of the following analogies most accurately represents the relationship of size between the Milky Way galaxy and our solar system?

• If the Milky Way galaxy is a school bus, our solar system is a sports car.

• If the Milky Way galaxy is a classroom our solar system is a school building.

• If the Milky Way galaxy is a tennis ball, our solar system is a tennis court.

• If the Milky Way galaxy is a beach, our solar system is a grain of sand.

Earth and its solar system are a part of which of the following galaxies?

• Cartwheel

• Milky Way

• Black Way

• Andromeda

Which of the following best describes a galaxy? A galaxy is...

• the visible path of a meteoroid as it enters Earth's atmosphere

• a visible body of liquid or frozen crystal droplets suspended about a planetary surface.

• a massive system of stars, gas, dust, and dark matter bound together by gravity.

• the ending stage of the life cycle of all super massive stars in the universe.

Which of the following best explains why the tilt of the Earth on its axis creates the seasons? Because the axis of Earth is tilted....

• the north pole of Earth will always be pointed away from the Sun, making it colder.

• the angle of sunlight varies on different parts of Earth at different times.

• the surface area of Earth is not constant at all parts of its orbit.

• the amount of time it takes for the light to reach Earth changes a little throughout the year.

Which of the following is a true statement?

• The galactic center is also the center of our solar system.

• The Sun is the center of the solar system.

• Our solar system is near the galactic center of the Milky Way.

• The Sun is the center of the Milky Way galaxy.