Gravity and Motion

Hellooo

Just a review day - grab your notes/paper and a pencil.

Gravity and Motion

MS-ESS1-2: Develop and use a model to describe the role of gravity in the motions within galaxies and the solar system.

Learning Targets

• I can create a model showing how gravity works in the solar system.

• I can describe the role of gravity in the solar system.

Multiple Choice

REVIEW!

What is weight?

• Gravity acting on something with mass

• How heavy something is

• The thing you do in line at Disneyland

Gravity and Gravitational Attraction

• Gravity: Force that attracts all objects toward each other.

• Force of gravity (between two objects) is affected by the masses of the objects and the distance between them.

Multiple Select

What would increase the force of gravity between two objects?

• Increase in mass

• Decrease in distance

• Decrease in mass

• Increase in distance

Fill in the Blank

The force of gravity would __________ if the distance between the moon and earth decreased.

Inertia

• Inertia: The tendency of an object to resist a change in motion.

• An object with more mass has more inertia.

• Objects with more inertia are harder to move and stop.

• Newton's First Law: An object at rest will stay at rest, an object in motion will stay in motion unless acted on by a force.

Multiple Choice

Why does a baseball continue to move after a pitcher lets go of it and stops applying force?

• The ball has speed.

• The ball has inertia.

• The ball has gravity.

• The ball has friction.

Fill in the Blank

__________ will cause the ball to hit the ground.

Orbital Motion

• Gravity and Inertia work to keep the moon in orbit around Earth.

• Without gravity and inertia the moon would travel in a straight line.

Poll

Go to Google Classroom to see your exit ticket. You should probably do it before you leave today.

• Yes, of course.

• Okay.

• Sounds good.

• It's okay, I will take the zero.

Poll

Press "Turn in" on Assignment 1: Gravity and Motion

• Yes, of course.

• Okay.

• Sounds good.

• It's okay, I will take the zero.