Our Solar System 23-24

How have models of Earth's position in the solar system changed over time?

• Original models showed the Moon in the center of the solar system, and current models show Earth at the center, orbited by the Sun and Moon.

• Original models showed Earth in the center of the solar system, and current models show the Moon at the center, orbited by the Sun and Earth.

• Original models showed the Sun in the center of the solar system, and current models show Earth at the center, orbited by the Sun.

• Original models showed Earth in the center of the solar system, and current models show the Sun at the center, orbited by Earth.

The Big Bang refers to the origin of which of the following?

• Earth

• our solar system

• the Milky Way galaxy

• the universe

Tags

NGSS.HS-ESS1-2

Who first proposed a heliocentric model of the solar system?

• Ptolemy

• Copernicus

• Brahe

• Galileo

Which description best defines the geocentric model?

• a model of the solar system in which the Sun, Moon, and other planets revolve around Earth

• a model of the solar system in which Earth, Moon, and other planets revolve around the Sun

• a model of the solar system in which the Sun, Moon, and all of the planets rotate but do not revolve

• a model of the solar system in which the Sun, Moon, and all of the planets revolve around a central axis

Hubble's research showed that the observable universe is

• contracting.

• cyclical.

• expanding.

• stationary.

Tags

NGSS.HS-ESS1-2

Which description best defines a galaxy?

• patterns in space formed by constellations

• all of the matter and energy that is in space

• a black hole that is found at the center of all solar systems

• collections of stars and their solar systems, dust, and gases

Which of the following would most likely be measured in light-years?

• distances between planets in a solar system

• the distance between Earth and the Moon

• the distance between Earth and the Sun

• distances between stars and galaxies

Our solar system is part of what galaxy?

• Alpha Centauri galaxy

• Betelgeuse galaxy

• Milky Way galaxy

• Andromeda galaxy

Which of the following groups contains objects arranged in order of increasing size?

• moon, planet, star, galaxy

• asteroid, planet, moon, galaxy

• galaxy, asteroid, moon, planet

• star, planet, asteroid, galaxy

A spiral galaxy

• has an undefined shape that is constantly changing.

• has a bulging middle and arms that coil outwards.

• is flattened and elongated.

• is perfectly round.