Solar System Unit Review

What do the stars, the planets and all the other objects orbiting it form?

Solar System

The Earth takes 24 hours to do what on it’s axis?

Rotate

What do you call the path the Earth takes around the sun?

An Orbit

What is a huge ball of very hot, glowing gases in space that can produce it’s own heat?

A Star

What is a group of solar systems held together by gravity?

A Galaxy

Which of the following planets has a solid rocky core?

a.Saturnb.Neptunec.Jupiterd.Mars

Earth moves around the sun, has a nearly round shape, and has an

elliptical path, so it is called

A.A galaxyB.A universeC.A planetD.A solar system

Where is the Asteroid belt located in the solar system?

Between Mars and Jupiter

Which of these objects could be located outside our solar system?

A.SunB.StarC.VenusD.Our moon

Why do stars look like tiny points of light in the sky at night?

They are so far away from us.

Why are elliptical galaxies brightest in the center?

• A. The stars are evenly distributed throughout the

galaxy.

• B. More stars are in the center than on the outer

edge.

• C. Most of the stars are near the outside of the

galaxy.

• D. The stars are spread throughout the galaxy in

bands that look like arms of the galaxy.

What kind of galaxy is shown in the picture below?

Irregular Galaxy

What is a chunk of rock or iron that is less than 1,000 km in diameter that orbits the sun?

Asteroid

What is the difference between a barred spiral galaxy and a normal one?

The shape of the galaxy’s center

What does it take 365 days to complete?

• A. A day

• B. A year

• C. A month

• D. An orbit

What is a solar system?

• The stars and all the bodies around

it.

Pluto is no longer considered a planet. How has it been reclassified?

It is a dwarf planet.

About how long does it take for the earth to go from point A to point C in the picture?

Six months

What is this a picture of?

A comet

What is an orbit?

The path one object takes around another object in space.

Which of the following has no atmosphere?

• A. Earth

• B. Moon

• C. Sun

• D. both Sun and

Moon

Which characteristic do all the outer planets share?

• A. They have a core of liquid metal and

rock.

• B. The surface is frozen rock and ice.

• C. There is evidence of life

• D. They have the largest diameters in the

solar system.

Which motion takes about 27 days?

• A. the motion of the moon

• B. the motion of the Earth

• C. the motion of the sun

• D. the motion of the planets

Why is it warmer in the summer in the United States?

• The Earth is tilted toward the sun

at that time of year.

Chris wants to make a cross-section of an inner planet. Which characteristic should it have?

• A. A large, solid core

• B. A small, liquid core

• C. A surface covered by liquid

• D. A ball with a very large diameter

When you look at this picture, which picture shows earth

during winter?

The picture on the right

A student wants to draw a scale model of the moon. If his

drawing of Earth is 4 cm. in diameter, what size should he

draw the moon?• A. 4 cm.

• B. 5 cm.

• C. 1 cm.

• D. 2 cm.