Quarterly 1 review (8) FLASHCARDS

Front

If the circle labeled "C" represents a solar system, what could the circle labeled "D" represent?

Back

a star

Answer explanation

Circle "C" represents a solar system, which contains stars. Therefore, circle "D" could represent a star, as it is a fundamental component of a solar system, unlike a galaxy, universe, or constellation.

Front

Does the color of water affect the rate at which the water changes temperature?

Back

the color of the water

Answer explanation

The experiment tests how the color of the water affects temperature change. The independent variable is the color of the water, as it is manipulated to observe its effect on the dependent variable, the temperature.

Front

Which point on the chart best represents the approximate size of Earth?

Back

x

Answer explanation

The point labeled 'x' best represents the approximate size of Earth on the chart, as it aligns with the known dimensions of Earth compared to the other celestial bodies depicted.

Front

Types of radiation increasing in energy: radio waves, microwaves, ultraviolet radiation, x-rays

Back

radio waves, microwaves, ultraviolet radiation, x-rays

Answer explanation

The correct order of radiation increasing in energy is radio waves, microwaves, ultraviolet radiation, and x-rays. This sequence reflects the electromagnetic spectrum, where energy increases from radio waves to x-rays.

Front

Which statement accurately compares a radio wave and an infrared wave?

Back

A radio wave has a longer wavelength and a lower frequency than an infrared wave.

Answer explanation

A radio wave has a longer wavelength and a lower frequency than an infrared wave, making option A the correct choice. Radio waves are at the lower end of the electromagnetic spectrum compared to infrared waves.

Front

Which feature of the Sun can be viewed during a total solar eclipse?

Back

corona

Answer explanation

During a total solar eclipse, the Moon completely covers the Sun's bright surface, allowing us to see the corona, which is the Sun's outer atmosphere. The core, sunspots, and convection zone are not visible during this event.

Front

Which of the following is correct about Main Sequence stars?

Back

Blue Main Sequence stars have a higher absolute brightness than Red Main Sequence stars.

Answer explanation

Blue Main Sequence stars are hotter and have higher absolute brightness compared to Red Main Sequence stars, which are cooler and less luminous.

Front

Which star is the blue giant? Options: Sun, Sirius B, Bellatrix, Betelgeuse. BELLATRIX - Temperature 22,000°C / Brightness - 9,211 / Radius (size) 5.75. BETELGEUSE - Temperature 3,500°C / Brightness - 60,000 / Radius (size) 764. SIRIUS - Temperature 25,000°C / Brightness - 0.026 / Radius (size) 0.008.

Back

Bellatrix

Answer explanation

Bellatrix is the blue giant as it has a high temperature of 22,000°C and a significant brightness of 9,211, which are characteristic of blue giants. In contrast, Betelgeuse is a red supergiant, and Sirius is a white dwarf.