Dark Secrets of the Sun NOVA Special Universe Documentary
When A Solar Storm Engulfs Earth
General Astronomy Test - Types of Spectra
Q1: Which type of spectrum contains dark lines at specific wavelengths that correspond to the absorption of light by specific elements?
Q2: What type of spectrum is produced by a hot solid, liquid, or dense gas and shows a continuous range of colors?
Q3: Which type of spectrum can be used to determine the composition of stars and other celestial objects?
Q4: What type of spectrum is produced when light is emitted by excited atoms in a high-temperature gas?
Q5: What type of spectrum is produced when light passes through a hot, low-density gas and atoms absorb specific wavelengths?
Q6: What type of spectrum is produced by a hot solid, liquid, or dense gas and shows a continuous range of colors?
Q7: Which type of spectrum is produced by a hot, low-density gas that emits light at specific wavelengths?
Q8: What type of spectrum is produced by a hot, thin gas that emits light only at specific wavelengths?
Q9: What type of spectrum is produced when light passes through a cool gas and atoms absorb specific wavelengths?
Q10: What type of spectrum is produced when an electric current is passed through a low-pressure gas and the gas emits light at specific wavelengths?
Q11: What type of spectrum is produced when light passes through a cool gas and elements absorb specific wavelengths?
Q12: What type of spectrum is produced by a low-density cloud of gas that is heated by nearby stars or other energy sources?
Q13: What type of spectrum is produced by a low-density cloud of gas that is heated by nearby stars or other energy sources?
Q14: Which type of spectrum can be used to determine the composition of stars and other celestial objects?
Q15: Which type of spectrum is produced by a hot, low-density gas that emits light at specific wavelengths?
Q16: What type of spectrum is produced when an incandescent solid, liquid, or gas emits light across a continuous range of colors?
Q17: What type of spectrum is produced when an incandescent solid, liquid, or gas emits light across a continuous range of colors?
Q18: Which type of spectrum is also known as a dark-line spectrum?
Q19: Which type of spectrum is produced by a source that emits light at all visible wavelengths?
Q20: Which type of spectrum is also known as a dark-line spectrum?
Insert the missing elements (marked by sign "?") in the sequences shown, making assumptions about the rules for forming these sequences.
0 1 2 3 4 ? 6 7 8 9 a b c d e ? g h i j 0 2 4 6 8 ? 12 14 16 18 0 1 4 9 16 ? 36 49 64 81 0 3 6 9 12 ? 18 21 24 27 0 -2 -2 0 4 ? 18 28 40 54 Su Mo Tu We Th ? Sa z o t t f ? s s e n 1 0 0 0 1 ? 1 0 2 1 M V E M J ? U N c u d t c ? s s o n 0 1 3 6 10 ? 21 28 36 45 r o y g ? i v 1 1 2 6 24 ? 720 5040 40320 362880 1 9 36 ? 126 126 ? 36 9 1 G X U V I ? R L da h k M G ? P E Z Y d c m μ n ? f a z y o t h t m ? t q q s