Unit 1 Review - Astronomy

Which ancient society first coined the word astronomy and contributed important early work in this discipline?

• The Vikings

• The Greeks

• The Indus

• The Romans

What is the geocentric model of the Solar System?

• The thought that the Sun is the center of the Solar System.

• The belief that the Moon is the center of the Solar System.

• The idea that the Earth is the center of the universe.

• The concept that the Sun and stars do not move, but the Earth is in constant movement.

Which of the following definitions BEST defines a satellite?

• The planets that orbit the stars

• The moons that orbit the planets

• The Earth's orbiting of the Sun

• Any object that revolves around another object

Choose the word that BEST completes the following sentence.

Gravity is ____________________ to the distance between and difference in mass between two objects.

• Exact

• Proportional

• Different

• Opposite

Which of the following occurrences is not dependent on gravity?

• The Moon's orbiting of the Earth

• The Earth's orbiting of the Sun

• Mars' orbiting of the Sun

• All of the above are dependent.

As a planet forms in space, which of the following makes its gravitational pull increase?

• Its mass increases.

• Its mass decreases.

• The planet's spherical shape provides the momentum needed to increase gravity.

• Its mass remains constant.

What is the approximate speed of rotation at Earth’s equator?

• 1,000,000 miles per hour

• 100,000 miles per hour

• 1,000 miles per hour

• 100 miles per hour

Choose the word that BEST completes the following sentence.

Because of the Earth’s ________________________, the Sun and other stars appear to be moving across the sky.

• Rotation

• Gravity

• Axis

• Geocentric model

If one were to horizontally divide the Earth in half at the equator, each half would be a:

• Sphere

• Geocentric model

• Heliocentric model

• Hemisphere

Which of the following causes day and night to occur?

• Rotation of the Sun and the Moon

• Rotation of the Moon and stars

• Rotation of the Earth on its axis

• Rotation of the other planets in the universe