Unit 1 Test Review

Space

100

What is the theory that the universe began 13.7 billion years ago?

The Big Bang Theory

200

What is the name of the spiral galaxy we live in?

The Milky Way

300

When the sun is in the center of the universe, what type of model is being displayed?

Heliocentric Model

400

How many stars are in our solar system?

1

500

The curved path of a celestial object or spacecraft around a star, planet, or moon is________

Orbit

Planets

100

How many planets are in our solar system?

8

200

What is the hottest planet?

Venus

300

Which planet could float in an ocean(or bathtub), if there were one that were big enough?

Saturn

400

The planets in our solar system move around the Sun because of _________.

Gravity

500

If a new star appeared in our solar system that was larger and heavier than the Sun, the planets would MOST LIKELY ________

Orbit the new star

Space Rocks

100

Which of the following is a wide region of small, rocky bodies that is located between the orbits of Mars and Jupiter?

Asteriod Belt

200

A ___________ is a meteoroid that enters Earth’s atmosphere. It is also known as a shooting star.

Meteor

300

A meteoroid that makes it to the surface of Earth is what?

Meteorite

400

What is the distinct difference between a comet and a meteroid?

Comet has a visible coma

500

A comet’s tail is visible only when they are close to the _________.

Sun

Graphs/Charts

100

What planet is Student A describing in Table 1?

Jupiter

200

Which planets have Carbon Dioxide as their most abundant atmospheric gases?

Venus, Mars

300

Which inner planet has the lowest density?

Mars

400

Which Planet is missing from the graph where Planet X is located?

Saturn

500

Describe the correlation between the speed of the planets and the distance from the sun. 

As the planets get farther from the sun, their speed decrease. 

Mixture

100

List all the planets in order from closest to the sun to farthest away.

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

200

When the Earth is at the center of the universe, what model is being displayed?

Geocentric

300

What is the difference between rotation and revolution?

Rotation is a when a planet moves around its own axis and Revolution is when it moves around another object. (Rotation spins, Revolution orbits)

400

Terry was learning about an object in the Solar System that is made of frozen gases, ice, dust, and solid rock. Which of these objects was she learning about?

Comet

500

The farther away galaxies are moving faster than the ones close to us means __________.

The universe is still expanding