Physical Science In Class Final

Front

What is the relationship between frequency, wavelength, and wave speed?

Back

Wave speed = frequency × wavelength. If frequency increases, wavelength decreases for a constant speed.

Front

What happens to the speed of a wave if its frequency increases while the wavelength remains the same?

Back

The speed of the wave increases.

Front

What type of wave has the highest frequency: visible light, ultraviolet, x-rays, or radio waves?

Back

X-rays have the highest frequency.

Front

What are the products of the natural radioactive decay of uranium-238?

Back

Thorium-234 and an alpha particle.

Front

What is the formula for calculating work done?

Back

Work = Force × Distance. If the distance is zero, work done is zero.

Front

If a force of 50N is applied to an object that does not move, how much work is done?

Back

0J, because work requires movement.

Front

What causes static electricity between two objects?

Back

Static electricity is caused by an imbalance of electric charges, where one object has a positive charge and the other has a negative charge.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

Define frequency in the context of waves.

Back

Frequency is the number of waves that pass a point in one second, measured in Hertz (Hz).

Front

What is the difference between kinetic and potential energy?

Back

Kinetic energy is the energy of motion, while potential energy is stored energy based on position.