6.1.2

The closer two objects are together, the stronger the gravitational force is between them.

• True

• False

Tags

NGSS.MS-PS2-4

​ (a)   a force which tries to pull two objects toward each other. ​ (b)   is when an object will stay in motion unless acted upon by another object or force. The planets of the solar system orbit around the Sun because of the Sun’s​ (c)   . Planets stay in their orbits around the sun because of the property of ​ (d)   . The planets would stay in a straight line because of ​ (e)   , but ​ gravity pulls on the planets and curves their paths into orbits around the Sun.

• gravity
• inertia
• magnetism

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

NGSS.MS-PS2-2

Use the chart to construct an explanation for which planet has the greatest gravitational attraction to an asteroid that passes halfway between Jupiter and Saturn.

• 1. Jupiter because it has three times the mass of Saturn.

• 1. Jupiter because it has twice the mass of Saturn.

• 1. Saturn because it has less mass than Jupiter.

• 1. Saturn because it is colder than Jupiter.

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

NGSS.MS-PS2-5

Based on the proportion between mass and distance which celestial object in the solar system would have the strongest gravitational pull on you if you were 1,000 km away from it?

• The Sun because it has the greatest mass

• The Earth because it always pulls harder than other objects in the solar system

• Jupiter because it is the largest planet

• The Moon because its gravity is so strong it causes the tides

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

Create an accurate model of the relationship between gravity and inertia and how it helps the planets stay in orbit by dragging and dropping the terms gravity and inertia to show how those factors are acting on the planet.

• Gravity Earth

• 5

• Gravity Mercury

• 6

• Inertia Venus

• 3

• Inertia Earth

• 4

• Gravity Venus

• 1

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

Match the statement to the correct arrow.

• A

• The force of gravity keeps the moon in its orbit around Earth.

• B

• The combination of the two keeps the Moon moving around the Earth

• A and B

• The property of inertia keeps the moon moving in a straight line until acted upon by another force.

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

Which two forces keep objects in orbital motion?

• Magnetism and inertia

• Gravity and magnetism

• Gravity and friction

• Gravity and inertia

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

According to the model, arrow a represents gravity.

• True

• False

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-1

Which statements are true about the role that gravity plays in our Solar System? Select all that are true. (There are 3)

• Without gravity, earth and other planets would crash directly into the Sun

• Gravity increases as the distance between objects decreases.

• Because of gravity, it takes the same amount of time for each planet to orbit the Sun.

• Gravity increases as the mass of an object increases

• Without gravity, earth would shoot off into space and no longer orbit the Sun.

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

Two students are in an argument about why the planets stay in orbit and do not fly off into space. They decide to create a model by spinning a tennis ball inside of a hula hoop. They observe that the hula hoop keeps the tennis ball in a circular motion, similar to the planets’ orbits. Which BEST explains how the students’ model relates to the orbits of the planets around the sun?

• Since the tennis ball in the students’ model eventually stopped, due to inertia, the planets will eventually stop orbiting the sun as well.

• In the model, the tennis ball is held in orbit by the hula hoop, just as the planets are held in orbit around the sun by gravity.

• The model shows that gravity will keep the planets in the solar system orbiting forever, because the hula hoop keeps the tennis ball in motion.

• The planets orbit the sun in our solar system, but since there was no sun in the students’ model, it is not a relevant model.

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2