Gravity Space

In which situation is the gravitational force between two objects hard to detect?

• if the mass of each object is very small

• if the mass of both objects is very great

• if the mass of one of the objects is very great

• if the objects are very close together

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Why does the Sun gravitationally dominate all other objects in the Solar System?

• The Sun is by far the brightest object in the Solar System.

• The Sun is by far the most massive object in the Solar System.

• The Sun moves at a greater speed than any of the other objects in the Solar System.

• The Sun is the closest object to planet Earth.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

When a scale is used to weigh an object on Earth, it measures the gravitational force that pulls on the object. The unit for the force of gravity pulling on an object is the newton (N). A student uses a scale to measure the force of gravity on 5 different objects, each with a mass of 20, 40, 60, 80, and 100 grams. She plotted her data on the graph shown above. What does the data show?

• The greater the mass of an object, the greater the gravitational pull exerted on it by Earth.

• An object gains mass when the gravitational force on Earth remains the same.

• The smaller the mass of an object, the greater the gravitational pull exerted on it by Earth.

• An object loses mass when the gravitational force on Earth remains the same.

Tags

NGSS.MS-PS2-4

Which of the following statements is true?

• Only objects that are very close together exert gravitational forces on each other.

• Objects can only exert gravitational forces if they are at least as dense as water.

• Any object with mass exerts a gravitational force on all other objects.

• Only objects that are as large as planets exert gravitational forces on other objects.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

__________ is the attractive pull between any two objects

• Atmospheric pressure

• Gravity

• Inertia

• Friction

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Gravity keeps

• the planet Mars in orbit around the Sun.

• moons in orbit around the planet Saturn.

• the Moon in orbit around Earth.

• all of these

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

Which statement best describes two objects experiencing a gravitational interaction?

• The objects can only attract each other and the force depends on their masses.

• The objects can attract and repel each other and the force does not depend on their masses.

• The objects can attract and repel each other and the force depends on their masses.

• The objects can only repel each other and the force does not depend on their masses.

Tags

NGSS.MS-PS2-4

Which of the following exerts gravity?

• only planets, moons, and stars

• any object with mass

• only objects on Earth

• only the Earth

Which of the following best describes a gravitational force?

• It can attract or repel two objects.

• It only repels two objects.

• It does not require objects to have mass.

• It only attracts two objects.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

A scientist observes and records data for the force of gravity between the Sun and a few different-sized planets. The different-sized planets are placed at the same distance from the Sun. Based on the above scenario, which graph best represents the gravity between the different-sized planets and the Sun?

• Z

• Y

• X

• W

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5