Why does it take Neptune so long to revolve around the Sun?

• The Sun is applying large amounts of gravity on the planet, slowing it down.

• Neptune has a large diameter causing the planet to be less aerodynamic, slowing it down.

• Neptune is such a long distance away that it has a large orbital path.

• Neptune is rotating fast for its size, and the energy of its orbit is being transferred into rotational speed.

Avery and Harper are planning a trip to observe planets. Which of the following represents characteristics of the four planets farthest from the Sun?

• Smaller planets

• Gas giants

• they are all the same

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.

The solar system is shown in the image. Which planet is closest to the Sun?

• Mercury

• Venus

• Earth

• Mars

Complete the statement below to describe the gravity in our solar system.

Gravity is the force that keeps the planets in orbit around the ​ (a)   and keeps the ​​ (b)   in orbit around Earth. The pull of the ​ (c)   causes ocean tides. On Earth, ​ (d)   causes an object to fall to the ground.

• planet
• star
• comet
• sun
• moon
• moon's gravity
• gravity

The moon remains in orbit around Earth because of the force of —

• A. Earth’s rotation

• B. the moon’s rotation

• C. Earth’s gravity

• D. the sun’s gravity

Which of the following factors is not essential for supporting life on Earth?

• Atmosphere containing oxygen

• Distance of the sun

• Presence of the Moon

The interaction between the Earth and Sun allows sustainable life on Earth, but not on other planets because:

• Earth is at the perfect distance from the Sun, allowing for a suitable climate.

• Other planets are too far or too close to the Sun, making them uninhabitable.

• Earth has a unique atmosphere that supports life.

• All of the above.

How do fossil records support the theory of plate tectonics?

• A) Similar fossils are found on the same continent at different time periods.

• B) Similar fossils are found on various modern continents.

• C) Different fossils are found on the same continent during the same time period.

• D) Fossils found along coastal regions of modern continents are unique.

Scientists have found some of the same types of rock containing the same types of fossil species in Africa and Antarctica. Which explanation does this information support?