Module 2 (IS) Waves: CEC 2024

Front

What is a scientific theory?

Back

A scientific theory is a well-substantiated explanation of an aspect of the natural world that is based on a body of evidence and can be tested through observation and experimentation.

Front

What is the relationship between wavelength and frequency?

Back

As the frequency of a wave increases, its wavelength decreases. High frequency waves have short wavelengths.

Front

Which type of electromagnetic wave has the highest energy?

Back

Gamma Rays have the highest energy and the shortest wavelength in the electromagnetic spectrum.

Front

What is the definition of wavelength?

Back

Wavelength is the distance between successive crests of a wave, typically measured in meters.

Front

What is the definition of frequency?

Back

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

Front

True or False: Scientific theories are not reliable.

Back

False. Scientific theories are based on evidence and are reliable explanations of natural phenomena.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What are radio waves used for?

Back

Radio waves are used for communication, including television, radio, and mobile phone signals.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).

Front

What is the difference between a hypothesis and a scientific theory?

Back

A hypothesis is a testable prediction about the relationship between variables, while a scientific theory is a well-supported explanation based on evidence.