Role of Gravity

The motion of galaxies and other celestial objects is caused by what?

• tides

• gravity

• space probes

• orbits

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What 2 factors keep the planets in orbit?

• Gravity & Orbital Speed

• Orbital Speed & Mass

• Gravity & Inertia

• Mass & Inertia

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Earth is part of the solar system. How do scientists believe the solar system formed?

• The solar system appears to have formed from a disk of dust and gas, drawn together by gravity.

• The sun’s gravity appears to have captured the planets of the solar system from a nearby galaxy.

• The Milky Way appears to have collided with another galaxy, capturing our sun and solar system in its greater gravity.

• The sun’s gravity attracted comets from the Oort Cloud, and these comets eventually consolidated into planets with regular orbits.

When the solar system was very young, the sun was just being formed and planets had not yet been made. The solar system was mostly gas and dust. Which statement best explains how planets formed in the early solar system?

• Planets formed from magnetism in space that interacted with light from the stars

• Planets formed from large asteroids that had broken apart.

• Planets formed from molten metal in volcanic eruptions.

• Planets formed from small amounts of debris that were attracted together because of gravity.

Tags

NGSS.MS-ESS1-2

The imiage shows the stages of the development of the solar system. Which statement best describes the process of the formation of the solar system?

• A black hole pulled the gas and dust together.

• Gravity pulled the gas and dust together.

• An explosion pushed the gas and dust together.

• Magnetism attracted the gas and dust together.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Every object in the universe is attracted to every other object. This is what Law?

• Newton's Law of Motion

• Hubble's Law

• The Law of Universal Gravation

• Law and Order

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Spring Tides: refers to the “springing forth” of the tide during new and full moons     Neap Tides: occurs seven days after a spring tide, refers to a period of moderate tides. Contrast spring tides and neap tides, and select the cause and effect choice that correctly explains how these tides are formed. (Select 2 choices)

• A. Spring tides occur when the Earth, Moon and Sun are at right angles to each other, but neap tides occur when the Earth, Moon, and Sun are in alignment.

• B. Neap tides occur when the Earth, Moon and Sun are at right angles to each other, but spring tides occur when the Earth, Moon, and Sun are in alignment.

• C. Cause: The Moon’s gravity causes the Earth to rotate & revolve. Effect: The Earth’s spinning motion results in ocean bulges called tides.

• D. Cause: The Moon’s gravity plus the Sun’s gravity pull on Earth’s oceans. Effect: The oceans bulge upwards creating high and low tides around the planet.

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

A student makes a model to depict the motion of a planet and a moon around the Sun. Which model accurately shows the motion of the planet and moon?

• 
• 
• 
• 

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

If a planet moves closer to the Sun, how will the gravitational force between the Sun and the planet change?

• The gravitational force reduces to Zero

• The gravitational force remains the same

• The gravitational force increases

• The gravitational force decreases

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The image shows the Moon in four different positions around Earth as viewed from space. The position of the Sun is also shown in the image. Which positions of the Moon will correspond to spring tides?

• positions 1 & 2

• positions 1 & 3

• positions 2 & 3

• positions 2 & 4

Tags

NGSS.MS-ESS1-1