SC.8.E.5.7

Lindsay sees an object fall from a tree to Earth.

Which answer best describes the example of what Lindsay is observing?

• Planetary motion

• Nuclear fusion

• Centripetal force

• Gravitational attraction

Tags

NGSS.MS-PS2-4

The distance between objects, along with the masses of the objects, affect the gravitational force between the objects.

Which statement is true according to Newton’s law of universal gravitation?

• When the masses of objects increase, gravitational force decreases.

• When distance between objects increases, gravitational force decreases.

• When distance between objects decreases, gravitational force decreases.

• When the masses of objects decrease, the distance between objects decreases.

Tags

NGSS.MS-PS2-4

Which statement best describes gravity acting as a centripetal force?

• A force that makes objects move in elliptical paths around the sun

• The point in an object’s orbit at which the object is closest to the sun

• The path that a body follows as it travels around another body in space

• The point in an object’s orbit at which the object is farthest from the sun

Tags

NGSS.MS-ESS1-2

Which flow chart best describes the formation of the solar system?

• Solar nebula → protostellar disk → nuclear fusion → sun → planetesimals →planets

• Solar nebula → protostellar disk → nuclear fusion → planetesimals →planets → sun

• Protostellar disk → nuclear fusion → sun → solar nebula → planetesimals → planets

• Solar nebula →nuclear fusion → sun → planets → planetesimals → protostellar disk

Tags

NGSS.MS-ESS1-2

This diagram shows part of the solar system. In addition to several planets, the diagram includes a belt of small objects that orbit the sun.

Which objects are located between the orbits of Mars and Jupiter?

• Asteroids

• Comets

• Kuiper Belt objects

• Meteorites

Tags

NGSS.MS-ESS1-1

Chang drew the diagram below to show that Earth’s axis of rotation is not perpendicular, but tilted. Which of the following does the tilt of the axis of rotation best explain?

• Why Earth has tides

• How long an Earth day is

• How long an Earth year is

• Why Earth has seasons

Tags

NGSS.MS-ESS1-1

What would happen if Earth’s orbit and the Moon’s orbit were in the same plane?

• Eclipses would occur every month.

• The Moon would not have phases.

• All sides of the Moon would be visible from Earth.

• The same side of the Moon would always face the Sun.

Tags

NGSS.MS-ESS1-1

The water level at the beach changes during the day.

What causes the different water levels?

• Earth’s revolution

• The Moon’s rotation

• Earth’s magnetic field

• The Moon’s gravitational pull

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-1

Based on this information, how does the average surface temperature on Mars compare to the average surface temperature on Saturn?

• Since Mars is closer to the Sun than Saturn, it has a higher average surface temperature.

• Saturn is larger than Mars and absorbs more light, so it has a higher average surface temperature.

• Since both planets are more than 1 AU from the Sun, their average surface temperatures are equal.

• Even though Saturn is further away, Saturn's rings cause it to have a lower average surface temperature.

Tags

NGSS.MS-PS1-4