ASTRO 7N EXAM 1 INTRODUCTION TO
ASTRONOMY FINAL ASSESSMENT
PREPARATION PAPER 2026 HIGH YIELD
CONCEPTS AND ANSWERS
◉ Zodiac Constellations
Answer: the 12 (or 13) constellations that lie along the ecliptic.
◉ The Sun is inside a Zodiac constellation at all times =
Answer: In each one for about a month, each year. During this time
you cannot see that constellation since it is behind the sun all day
and not on the nighttime side of Earth
◉ winter zodiac constellations
Answer: ones opposite the sun in the winter
◉ Summer zodiac constellations
Answer: ones opposite the sun in the summer
◉ Photon
,Answer: Light has some properties of a wave and other properties of
a particle. A "particle of light" is called a
◉ Forms of light, from high-energy to low-energy
Answer: gamma ray- X-ray- Ultraviolent- visible- infared-
microwave- radio
◉ high energy, high frequency
Answer: low/ short wavelength and a bluer color
◉ Low energy and low frequency
Answer: high/ long wavelength a redder color
◉ All forms of radiation travel at the
Answer: speed of light
◉ Wavelengths of radio waves=
Answer: meters and centimeters
◉ wavelengths of visible light=
Answer: ten-billionths of a meter (hundreds of nanometers)
, ◉ Wavelengths of xrays
Answer: even smaller
◉ A prism splits light into different colors by
Answer: bending different wavelengths by different angles
◉ Blackbody spectrum
Answer: higher temperature = more light in total, and a peak
intensity at a shorter wavelength (or at a bluer color)
◉ The Sun's surface temperature is about 5800 degrees Kelvin.
Answer: Its spectrum peaks in the visible light region (peak around
green —a "green star"!).
◉ Room temperature is about 300 degrees Kelvin; a "blackbody" at
room temperature peaks in
Answer: The infrared region of light
◉ What kinds of radiation get through the Earth's atmosphere?
Answer: Visible and radio
◉ Continuum spectrum
ASTRONOMY FINAL ASSESSMENT
PREPARATION PAPER 2026 HIGH YIELD
CONCEPTS AND ANSWERS
◉ Zodiac Constellations
Answer: the 12 (or 13) constellations that lie along the ecliptic.
◉ The Sun is inside a Zodiac constellation at all times =
Answer: In each one for about a month, each year. During this time
you cannot see that constellation since it is behind the sun all day
and not on the nighttime side of Earth
◉ winter zodiac constellations
Answer: ones opposite the sun in the winter
◉ Summer zodiac constellations
Answer: ones opposite the sun in the summer
◉ Photon
,Answer: Light has some properties of a wave and other properties of
a particle. A "particle of light" is called a
◉ Forms of light, from high-energy to low-energy
Answer: gamma ray- X-ray- Ultraviolent- visible- infared-
microwave- radio
◉ high energy, high frequency
Answer: low/ short wavelength and a bluer color
◉ Low energy and low frequency
Answer: high/ long wavelength a redder color
◉ All forms of radiation travel at the
Answer: speed of light
◉ Wavelengths of radio waves=
Answer: meters and centimeters
◉ wavelengths of visible light=
Answer: ten-billionths of a meter (hundreds of nanometers)
, ◉ Wavelengths of xrays
Answer: even smaller
◉ A prism splits light into different colors by
Answer: bending different wavelengths by different angles
◉ Blackbody spectrum
Answer: higher temperature = more light in total, and a peak
intensity at a shorter wavelength (or at a bluer color)
◉ The Sun's surface temperature is about 5800 degrees Kelvin.
Answer: Its spectrum peaks in the visible light region (peak around
green —a "green star"!).
◉ Room temperature is about 300 degrees Kelvin; a "blackbody" at
room temperature peaks in
Answer: The infrared region of light
◉ What kinds of radiation get through the Earth's atmosphere?
Answer: Visible and radio
◉ Continuum spectrum
