Q2 exam review (waves & space) 2024

Front

What is the first day of summer for the Northern Hemisphere?

Back

The first day of summer for the Northern Hemisphere is represented by position 4 in the diagram.

Front

What is frequency?

Back

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

Front

Can no sunlight be seen from anywhere on Earth during a total solar eclipse?

Back

False. During a total solar eclipse, some sunlight can still be seen from certain locations on Earth.

Front

What occurs when the moon passes directly between the Earth and the Sun?

Back

A solar eclipse occurs when the moon passes directly between the Earth and the Sun.

Front

What is the major difference between analog and digital signals?

Back

Analog sends continuous wave signals, while digital sends wave pulse signals.

Front

What is a wave?

Back

A wave is a disturbance that transfers energy from one place to another without transferring matter.

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 a lunar eclipse?

Back

A lunar eclipse occurs when the Earth passes between the Sun and the Moon, causing the Earth's shadow to cover the Moon.

Front

What is the electromagnetic spectrum?

Back

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

Front

What is the difference between a solar and lunar eclipse?

Back

A solar eclipse occurs when the Moon blocks the Sun, while a lunar eclipse occurs when the Earth blocks sunlight from reaching the Moon.