8th Grade Science OSTP Topics: Physical Science

Front

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

Back

They are equal in magnitude and opposite in direction.

Front

Which statement best describes the relationship between force and motion?

Back

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

Front

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

Back

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

Front

What is true about gravitational forces?

Back

They are directly proportional to the masses involved.

Front

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

Back

Through fields that extend through space.

Front

What accurately describes simple waves?

Back

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

Front

What is necessary for the transmission of sound waves?

Back

Solid medium.

Front

How do geologists use seismic waves?

Back

To probe structures deep in the planet.

Front

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

Back

Encoding and transmitting information reliably.

Front

What type of force is always attractive?

Back

Gravitational