Physical Sciences Final

Front

What is the definition of wave period?

Back

The wave period is the time it takes for one complete cycle of a wave to pass a given point, typically measured in seconds.

Front

Which wave phenomenon occurs when a wave changes direction as it passes from one medium to another?

Back

Refraction.

Front

What is the relationship between frequency and period in wave motion?

Back

Frequency is the number of cycles per second, while period is the time for one cycle. They are inversely related: Frequency = 1/Period.

Front

What is the formula for calculating momentum?

Back

Momentum (p) = mass (m) × velocity (v).

Front

How do seat belts reduce the risk of injury during a collision?

Back

Seat belts decrease the impact force by increasing the time over which momentum changes, thus reducing the force experienced by passengers.

Front

What is the pH range that blueberries prefer for optimal growth?

Back

Blueberries prefer a soil pH range of 4.0 to 6.0.

Front

What is diffraction in wave behavior?

Back

Diffraction is the bending of waves around obstacles or through openings, causing the wave to spread out.

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing back of a wave when it hits a surface, while refraction is the bending of a wave as it passes from one medium to another.

Front

What is the principle of conservation of momentum?

Back

The total momentum of a closed system remains constant if no external forces act on it.

Front

What is the significance of the wave speed formula?

Back

Wave speed (v) = frequency (f) × wavelength (λ). This formula helps in understanding how fast a wave travels through a medium.