8th Grade Science OSTP Topics: Physical Science

According to Newton's third law, when two objects interact, what happens to the forces between them?

• They cancel each other out.

• They combine to form a single force.

• They are equal in magnitude and opposite in direction.

• They are proportional to the masses of the objects.

Tags

NGSS.MS-PS2-1

Which statement best describes the relationship between force and motion?

• Force and motion are unrelated.

• Motion depends on the object's mass, not force.

• The greater the force, the greater the change in motion.

• The greater the mass, the greater the force.

Tags

NGSS.MS-PS2-2

What determines the strength and type of electromagnetic forces between objects?

• The color of the objects.

• The shape of the objects.

• The magnitudes of the charges, currents, or magnetic strengths involved.

• The temperature of the objects.

Tags

NGSS.HS-PS2-4

NGSS.HS-PS2-5

What is true about gravitational forces?

• They are always repulsive.

• They only exist between Earth and the Moon.

• They are directly proportional to the masses involved.

• They are negligible unless one or both objects have large mass.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-2

How are electric, magnetic, and gravitational forces explained when they act at a distance?

• Through direct contact between the objects.

• Through exchange of particles.

• Through fields that extend through space.

• Through the objects' densities.

Tags

NGSS.MS-PS2-5

NGSS.MS-PS2-3

Which statement accurately describes simple waves?

• They have varying patterns.

• They lack specific wavelengths.

• They have constant amplitudes.

• They have repeating patterns with specific wavelengths, frequencies, and amplitudes.

Tags

NGSS.MS-PS4-1

What is necessary for the transmission of sound waves?

• Vacuum.

• Solid medium.

Tags

NGSS.MS-PS4-2

How do geologists use seismic waves?

• To create earthquakes.

• To study electromagnetic fields.

• To probe structures deep in the planet.

• To generate volcanic eruptions.

Tags

NGSS.HS-ESS1-5

What is a common use of digitized signals in modern communications devices?

• Morse code.

• Smoke signals.

• Carrier pigeons.

• Encoding and transmitting information reliably.

Tags

NGSS.MS-PS4-3

What type of force is always attractive?

• Gravitational

• Magnetic

• Electric

• Nuclear

Tags

NGSS.MS-PS2-4