NGSS Semester 1 Review

Front

What is wave diffraction?

Back

Wave diffraction is the bending of waves around obstacles and openings, allowing waves to spread out after passing through narrow gaps or around barriers.

Front

What happens to a wave when it changes mediums?

Back

When a wave changes mediums, it can change speed and direction, a phenomenon known as refraction.

Front

How is electric force calculated between charged plates?

Back

Electric force (F) can be calculated using the formula F = E * q, where E is the electric field strength and q is the charge.

Front

What does the red part of a compass indicate?

Back

The red part of a compass points toward the south magnetic pole of the Earth.

Front

How do you calculate the speed of sound using distance and time?

Back

Speed of sound can be calculated using the formula: Speed = Distance / Time. For example, if you clap and hear the echo after 2.34 seconds from 400 m away, Speed = 400 m / (2.34 s / 2) = 342 m/s.

Front

What is the definition of a medium in wave propagation?

Back

A medium is a substance or material through which a wave travels, such as air, water, or solid materials.

Front

What is the principle of superposition in wave interference?

Back

The principle of superposition states that when two or more waves overlap, the resulting wave displacement is the sum of the individual wave displacements.

Front

What is the difference between reflection and refraction of waves?

Back

Reflection is the bouncing back of waves when they hit a barrier, while refraction is the bending of waves as they pass from one medium to another.

Front

What is the relationship between frequency and wavelength in waves?

Back

The relationship is given by the equation: Speed = Frequency x Wavelength. As frequency increases, wavelength decreases, and vice versa.

Front

What is the formula for calculating electric field strength?

Back

Electric field strength (E) can be calculated using the formula E = F / q, where F is the force experienced by a charge q.