Science Quarterly 2 Review 2023

Front

What is a white dwarf star?

Back

A white dwarf star is a small, dense star that has low absolute brightness and high surface temperatures, typically formed from the remnants of a star that has exhausted its nuclear fuel.

Front

What does the heliocentric model of the Solar System state?

Back

The heliocentric model states that the Sun is at the center of the Solar System, and the planets, including Earth, orbit around it.

Front

How does Earth's distance from the Sun affect the length of a year?

Back

The length of a year is shorter for planets closer to the Sun, like Earth, compared to those farther away, like Neptune, due to the difference in orbital paths and speeds.

Front

Where do earthquakes commonly occur?

Back

Earthquakes generally occur along the edges of tectonic plates, where the plates interact with each other.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, including visible light, infrared radiation, and X-rays, each with different wavelengths and energy levels.

Front

What is the relationship between infrared radiation and visible light?

Back

Infrared radiation has less energy than visible light and is located on the electromagnetic spectrum at longer wavelengths.

Front

What causes the apparent movement of stars in the night sky?

Back

The rotation of Earth on its axis causes the apparent movement of stars in the night sky, making them seem to move across the sky.

Front

What is an astronomical unit (AU)?

Back

An astronomical unit (AU) is a standard unit of measurement used in astronomy, defined as the average distance from the Earth to the Sun, approximately 93 million miles or 150 million kilometers.

Front

How does the size of a planet affect its year length?

Back

The size of a planet does not directly affect its year length; rather, it is the distance from the Sun that determines how long it takes to complete an orbit.

Front

What is the significance of tectonic plates in relation to earthquakes?

Back

Tectonic plates are significant because their movement and interaction at plate boundaries are the primary causes of earthquakes.