PMA Q1 Review

Front

What is the composition of the sun?

Back

The sun is primarily made of helium and hydrogen.

Front

What part of the electromagnetic spectrum can humans see?

Back

Visible light is the portion of the electromagnetic spectrum that can be detected by the human eye.

Front

What is the geocentric model of the solar system?

Back

The geocentric model is an astronomical theory that places the Earth at the center of the universe, with all other celestial bodies orbiting around it.

Front

What is the heliocentric model of the solar system?

Back

The heliocentric model is an astronomical theory that places the Sun at the center of the solar system, with the Earth and other planets orbiting around it.

Front

What are mechanical waves?

Back

Mechanical waves are waves that require a medium (solid, liquid, or gas) to travel through.

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves that do not require a medium to travel and can move through a vacuum.

Front

What happens during Segment B to C in a motion graph?

Back

During Segment B to C, the car comes to a complete stop.

Front

What is the difference between visible light and ultraviolet light?

Back

Visible light is the part of the electromagnetic spectrum that can be seen by the human eye, while ultraviolet light is not visible and has shorter wavelengths.

Front

What is the definition of a star?

Back

A star is a massive, luminous sphere of plasma held together by gravity, undergoing nuclear fusion.

Front

What is the role of the sun in the solar system?

Back

The sun is the central star of the solar system, providing light and heat that sustain life on Earth.