Day 2 galaxies

A galaxy is:

• a large system of stars, gas, and dust

• a single star in the universe

• a planet in our solar system

• a type of comet

Tags

NGSS.MS-ESS1-2

Galaxies are classified based on which of the following criteria?

• Their shape and structure

• Their distance from Earth

• The number of stars they contain

• Their color only

All galaxies are the same size.

• True

• False

• Only spiral galaxies are the same size

• Only elliptical galaxies are the same size

Which statements accurately describe the shapes of galaxies?

• An elliptical galaxy has an irregular shape and spiral arms.

• A spiral galaxy has an oval shape and spiral arms.

• An irregular galaxy has an oval shape and no spiral arms.

• A spiral galaxy has a central bulge and spiral arms.

• An elliptical galaxy has a round shape and no spiral arms.

Which statements are true of a galaxy?

• It is a structure that contains gas, dust, and billions of stars.

• It is a single massive star surrounded by planets and moons.

• It is a cluster of stars that exists within Earth’s solar system.

• It is a collection of gases resulting from the death of stars.

• It is held together by the force of gravity.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The Milky Way galaxy has a specific shape, and Earth’s solar system is located in a particular region within it. What is the shape of the Milky Way galaxy AND where is Earth’s solar system located within the Milky Way?

• The Milky Way is a spiral galaxy, and Earth’s solar system is located in one of its spiral arms.

• The Milky Way is an elliptical galaxy, and Earth’s solar system is at the center.

• The Milky Way is a ring-shaped galaxy, and Earth’s solar system is on the outer edge.

• The Milky Way is an irregular galaxy, and Earth’s solar system is in the halo.

Tags

NGSS.MS-ESS1-2

Which description correctly identifies an action-reaction force pair in this situation?

• A. Action: The force of the foot on the boat. Reaction: The force of the boat on the foot.

• B. Action: The force of the boat on the water. Reaction: The force of the foot on the boat.

• C. Action: The force of the foot on the boat. Reaction: The force of the boat on the water.

• D. Action: The force of the boat on the foot. Reaction: The force of the boat on the foot.

Tags

NGSS.MS-PS2-1

Which statement correctly describes the reaction force between the hand and the block?

• The reaction force is the force that causes the block to move toward the hand.

• The reaction force is the force that pulls downward on the block.

• The reaction force is the force that causes the block to move away from the hand.

• The reaction force is the force that pushes upward on the block.

Tags

NGSS.MS-PS2-1

A system of stars, gas, dust, and dark matter bound together by gravity is called -

• an asteroid
• a nebula
• a galaxy
• a moon

Tags

NGSS.MS-ESS1-2

We live in the ______________ galaxy.

• Snickers

• Baby Ruth

• Hershey

• Milky Way