DCP

Which statement about the forces acting on the balancing rock best explains the stability of the rock over time?

• No forces are acting on the rock

• the sum of the forces acting on the rock is zero

• the force of gravity is not acting on the rock

• the force of gravity is the only force acting on the rock

Tags

NGSS.MS-PS2-4

Based on the information in the model, which statement best explains how DDT was introduced into eagle populations?

• The eagles absorbed the DDT directly from the air

• The eagles absorbed the DDT directly from the water

• The eagles absorbed the DDT after eating large fish

• The eagles absorbed the DDT after eating zooplankton

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

The engineers observed that the skateboard floats above the track because the magnets on the skateboard ______ the magnets on the track.

• attract

• repel

• make contact with

Tags

NGSS.MS-PS2-3

When a rider steps onto the skateboard, the force between the skateboard and the track ____ .

• increases

• decreases

• stays the same

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If the magnets are removed from the skateboard, the height of the skateboard should ____.

• increases

• decreases

• stays the same

Tags

NGSS.MS-PS2-2

Which claim about the mass of the different objects is best supported by the data in the table?

• Object 1 has the greatest mass because it is closest to the sun

• Object 2 has the greatest mass because its orbital period and distance from the sun are most similar

• Object 3 has the greatest mass because it has the largest surface gravity

• Object 5 has the greatest mass because it has the longest orbital period

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

• Dot 1

• Dot 2

• Dot 3

• Dot 4

Tags

NGSS.MS-PS4-1

Scientist will study how Earth's magnetic field changes as distance from Earth changes. Satellites will be placed at different distances from Earth and will be used to measure the strength of Earth's magnetic field. What is the Dependent Variable?

• magnetic field strength

• distance from Earth

• size of satellite

• mass of satellite

• gravitational force of Earth

Scientist will study how Earth's magnetic field changes as distance from Earth changes. Satellites will be placed at different distances from Earth and will be used to measure the strength of Earth's magnetic field. What is the Independent Variable?

• magnetic field strength

• distance from Earth

• size of satellite

• mass of satellite

• gravitational force of Earth

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

As conditions changed, the Anasazi relied (more / less) on domesticated turkeys and (snakes / mice / rabbits) for food

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4