7th Grade 3rd 9 Weeks Test Review

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.

All of the planets in our solar system have about the same —

• mass

• diameter

• shape

• composition

Which of the following accurately describes the orbital path of most planets in our solar system?

• The orbital path is in a perfect circle.

• The orbital path is in an ellipse, but looks almost circular.

• The orbital path is in a large elliptical shape.

• The orbital path varies greatly from planet to planet.

Which of the following represents characteristics of the four planets farthest from the Sun?

• Smaller planets

• Gas giants

• Rocky (terrestrial) planets

• 3 or less moons

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

• Asteroid

• Meteor

• Comet

• Section X

Which of the following represents characteristics of the four planets closest to the Sun?

• Larger planets

• Gas giants

• Rocky (terrestrial) planets

• 4 or more moons

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?

• Both continents gradually increased in size over time.

• Both continents were attached by glacial ice millions of years ago

• Both continents were attached but drifted away from each other over time.

• Both continents were underwater millions of years ago.

Which combination of the following theories was most directly responsible for the development of the Theory of Plate Tectonics?

• Continental Drift and Seafloor Spreading

• Pangaea and Special Relativity

• Heliocentric Solar System and Continental Drift

• Darwin’s Theory of Natural Selection and Germ Theory

These facts most closely correlate to which Scientific Theory?

Fossils of the plant Glossopteris were found across the Southern continents

Glacial deposits were found in tropical areas

Modern continents have a “jig-saw puzzle” appearance as if they could fit together in many instances

• Seafloor Spreading as proposed by Harry Hess

• Continental Drift as proposed by Alfred Wegener

• Plate Tectonics as proposed by John Nash

• General Relativity as proposed by Albert Einstein

Scientists recently discovered that rocks collected from the Franklin Mountains in West Texas and rocks collected from mountains in eastern Antarctica were exactly the same age. Further research showed that the rocks were chemically and geologically the same and came from the same magma source. This discovery provides evidence of —

• coastal erosion

• plate tectonics

• ocean currents

• glacial melting