7.8b

High rains cause the flow in a river to increase. The increase in the river’s flow will most likely have which of the following effects on the environment?

• The banks of the river will experience increased erosion.

• The river will deposit less material onto its delta.

• The path of the river will become more crooked.

• The river will dry out completely in a few days.

Tags

NGSS.MS-ESS2-2

A student is modeling the Solar System to understand orbital motion. Which force is primarily responsible for keeping Earth in its orbit around the Sun?

• Centrifugal force

• Magnetic force

• Gravitational force

• Frictional force

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Based on the model, which statement correctly describes the gravitational force between Planet A and Planet B?

• The gravitational force is stronger on Planet A than on Planet B.

• The gravitational force only acts from Planet A to Planet B.

• The gravitational force is equal in magnitude for both planets.

• The gravitational force is weaker on Planet A than on Planet B.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which TWO of the following observations provide evidence that Io has a stronger gravitational pull than Earth's moon?

• Io has a larger diameter than Earth's moon.

• Volcanic eruptions on Io can eject material to greater heights.

• Io's orbit around Jupiter is faster than the Moon's orbit around Earth.

• An astronaut would weigh more standing on Io's surface than on Earth's moon.

• Io has a higher surface temperature than Earth's moon.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What does the graph indicate about the relationship between distance and gravitational force?

• Gravitational force increases linearly as distance increases.

• Gravitational force decreases as distance increases.

• Gravitational force remains constant regardless of distance.

• Gravitational force increases exponentially as distance increases.

How does changing the mass of objects from Experiment 1 to Experiment 2 affect their gravitational attraction?

• The gravitational force increases with an increase in mass.

• The gravitational force decreases with an increase in mass.

• The gravitational force remains constant regardless of mass.

• The gravitational force is inversely proportional to the mass.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

A student is using a computer program to model the formation of a solar system. In the model, which TWO factors most directly influence the strength of gravitational interactions between forming planets?

• The color of the planets

• The mass of the planets

• The distance between the planets

• The temperature of the planets

• The rotation speed of the planets

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

A student is studying the orbits of planets in our Solar System. Which statement best explains why the inner planets (Mercury, Venus, Earth, and Mars) orbit the Sun faster than the outer planets (Jupiter, Saturn, Uranus, and Neptune)?

• The inner planets have stronger magnetic fields.

• The outer planets are slowed down by more moons.

• The Sun's gravitational pull is stronger on the inner planets.

• The inner planets have less atmospheric resistance.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Explain how the Moon's velocity and Earth's gravitational pull work together to keep the Moon in orbit. In your answer, describe what would happen if Earth's gravity suddenly disappeared.

• The Moon would continue to orbit Earth in the same way.

• The Moon would move in a straight line away from Earth.

• The Moon would fall towards Earth.

• The Moon would stop moving completely.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Scientists are studying Jupiter's moon Io, known for its intense volcanic activity. What are they analyzing in terms of gravitational force?

• The effect of Io's atmosphere on gravitational force

• How differences in mass and distance affect gravitational force

• The impact of solar radiation on gravitational force

• The role of magnetic fields in gravitational force

Tags

NGSS.MS-PS2-4