The Internet Sun Quiz consists of 10 questions randomly selected from NASA and other excellent Web sites. Answers are entered by clicking the option button that corresponds to your selection. The test is scored by clicking "Grade Test" at end of the exam. Correct answers are found through hypertext links located at the end of the exam. You may check the source of the answer by following the link to it.
Please answer ALL 10 questions
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Question #1: The nearest star to the earth is ...
(B) The Sun
(this information is found at The Virtual Sun)
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PERCENTAGE OF HYDROGEN IN THE SUN (by weight)
Question #2: The Sun is a ball of hot gases. By weight, it is hydrogen, 28% helium, 1.5% carbon, nitrogen, and oxygen, and 0.5% all other elements.
(A) 70%
(this information is found at NASA Exploratorium - Facts about the sun
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THE SUNS TEMPERATURE AT THE SURFACE
Question #3: The Sun's temperature is 10,000 degrees Fahrenheit at the surface.
(A) 10,000
(this information is found at NASA Exploratorium - Facts about the sun)
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THE SUNS TEMPERATURE AT THE CENTER
Question #4: The Sun's temperature is 27,000,000 degrees Fahrenheit at the center.
(A) 27,000,000 degrees Fahrenheit
(this information is found at NASA Exploratorium - Facts about the sun)
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DISTANCE
Question #5: The Sun is our nearest star and the source of energy for life on Earth. It is about 150 million km away (93 million miles), a distance which sunlight covers in 8 minutes, whereas the distance to the moon is only 1.3 light-seconds.
(A) 93 million miles
(this information is found at NASA ISTP Project)
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MASS
Question #6: The Sun is about 300,000 times heavier than Earth and rotates around its axis (as viewed from the orbiting Earth) in about 27 days.
(A) Earth
(this information is found at NASA ISTP Project)
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SUNSPOTS
Question #7: Sunspots undergo a well-known cycle of about years (varying irregularly by about one year), during which their numbers grow and decrease again.
(B) 11.5 years
(this information is found at NASA ISTP Project)
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SPECTRAL LINES
Question #8: Certain spectral lines (e.g. the red line of hydrogen) are particularly useful, because they come from high levels in the Sun's atmosphere.
(C) the red line of hydrogen
(this information is found at NASA ISTP Project)
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SUN PARTS
(A) Question #9: The solar furnace that converts hydrogen into helium is deep within the Sun in a region called the core. The difference in temperature between the core and the surface of the Sun forces the energy to travel outward. It travels as radiation (i.e., light and more energetic forms of radiation) through a region called the radiation zone. In the outer part of the Sun's interior, heated solar material circulates in large cells, carrying the energy with it. This process is called convection, and this part of the Sun is called the convection zone
A. CONVECTION zone.
(this information is found at NASA )If you need to confirm your answers, a new browser window will open as you hyperlink. To return to the Quiz Page, Close the new window and press the back button on your browser.
DIAMETER OF THE SUN
Question #10: The Sun is the most prominent feature in our solar system. It is the largest object and contains approximately 98% of the total solar system mass. One hundred and nine Earths would be required to fit across the Sun's disk, and its interior could hold over 1.3 million Earths.
(B) One hundred and nine
(this information is found at Views of the Solar System)If you need to confirm your answers, a new browser window will open as you hyperlink. To return to the Quiz Page, Close the new window and press the back button on your browser.