Lesson 1 Gravity and the Universe

Elsa drops a ball from her hand. What force causes the ball to fall towards the Earth's surface?

• A force that keeps objects on Earth's surface

• A force that pushes objects away from Earth

• A force that pulls objects towards the sky

• A force that causes objects to float in space

Tags

NGSS.3-PS2-1

NGSS.5-PS2-1

Anna Claire and Eleanor are discussing gravity. Anna Claire says that the strength of gravity depends on the ____________.

• mass of the objects and the distance between them

• speed of the objects and the distance between them

• temperature of the objects and their mass

• mass of the objects and their speed

Tags

NGSS.MS-PS2-4

This is a diagram that Joe and Taylor created. The size of the arrows illustrate the size of the force of ___________ depends on size and distance.

• gravity

• magnetism

• electricity

• wind

Tags

NGSS.MS-PS2-4

Harper and Hinleigh are discussing the role of gravity in the formation of stars. What should they agree upon as gravity's primary role in this process?

• The beginning of a star starts when gravity causes materials in space to compress together forming a protostar.

• The beginning of a star starts when gravity causes stars to become colder

• The beginning of a star starts when gravity causes stars to push surrounding gas.

• The beginning of a star starts when gravity causes stars to undergo nuclear fission

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NGSS.HS-PS2-4

Emma and Mary Kathryn are discussing the role of gravity in the formation of the solar system. What is the main role of gravity in this process?

• Gravity caused the denser particles to contract and form planets

• Gravity caused the Sun to form from a cloud of dust and gas

• Gravity caused the formation of moons, dwarf planets, and asteroids

• Gravity caused all of these.

Tags

NGSS.MS-ESS1-2

Luke and Crenshaw are discussing how planets stay in orbit around the Sun. What is the role of gravity in this process?

• Gravity pulls each planet toward the Sun and keeps them in orbit

• Gravity pushes each planet away from the Sun and keeps them in orbit

• Gravity causes planets to collide with each other

• Gravity causes planets to move away from the Sun

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

During a school trip to the planetarium, Mary Walker, Alice and Elizabeth learned about galaxies. What did they discover galaxies to be?

• Huge collections of stars

• Regions of nearly empty space

• Clusters of planets

• Groups of asteroids

James, David, and Easton learned that larger objects have

________ gravitational forces than do smaller objects.

• stronger

• weaker

• the same

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Eli, Bennett, and Cassel are discussing the largest galaxy in the Local Group during their astronomy club meeting. Which galaxy are they talking about?

• Andromeda Galaxy

• Milky Way Galaxy

• Virgo Cluster

• Spiral Galaxy

Tags

NGSS.MS-ESS1-2

Louise, Ana, and Anne Chapline are discussing the classification of galaxies in their astronomy class. What are the three main types of galaxies they might be discussing?

• Spiral, elliptical, or irregular

• Gas, dust, and stars

• Clusters, superclusters, and voids

• Protostars, stars, and planets