Quarter 2 Benchmark Review

Front

What does the Big Bang theory explain about the universe?

Back

The Big Bang theory explains that the universe began as a singularity and has been expanding ever since.

Front

How does the expansion of the universe relate to galaxies?

Back

As the universe expands, galaxies move farther away from each other, which supports the Big Bang theory.

Front

What is the effect of gravity on the movement of planets in the solar system?

Back

Gravity pulls planets into elliptical orbits around the sun.

Front

What would happen to planets if there was no gravity?

Back

Without gravity, planets would move in a straight path instead of orbiting the sun.

Front

What is frequency in the context of waves?

Back

Frequency is the number of waves that pass a point in a given period of time, usually measured in Hertz (Hz).

Front

How can you identify a wave with the highest frequency?

Back

The wave with the highest frequency has the shortest wavelength.

Front

What type of wave can travel through a vacuum, such as outer space?

Back

Light waves can travel through a vacuum and do not require a medium.

Front

What is the difference between sound waves and light waves?

Back

Sound waves require a medium (like air or water) to travel, while light waves do not.

Front

What is wavelength in a wave?

Back

Wavelength is the distance between two consecutive points of the same phase in a wave, such as crest to crest.

Front

What is amplitude in a wave?

Back

Amplitude is the maximum displacement of points on a wave from its rest position, indicating the wave's energy.