MCQ Chapter 17 General Science Class 7 Maharashtra Board MCQ For All Chapters – General Science Class 7Effects of Light 1. What is a total lunar eclipse?When part of the Moon is shadowedWhen the whole Moon is in Earth’s shadowWhen the Sun is fully coveredWhen the penumbra covers the MoonQuestion 1 of 202. Can you watch a lunar eclipse with the naked eye?No, it’s harmfulYes, it’s safeOnly with gogglesOnly at nightQuestion 2 of 203. What is an occultation?A type of shadowWhen a planet or star passes behind the MoonA solar eclipseA lunar eclipseQuestion 3 of 204. What is a zero shadow day?When shadows are longestWhen shadows disappear at noonWhen the Sun setsWhen the Moon blocks the SunQuestion 4 of 205. Where can a zero shadow day be observed?At the polesBetween the Tropic of Cancer and Tropic of CapricornAbove the equator onlyIn spaceQuestion 5 of 206. What causes the Earth to appear bluish from space?Reflection of oceansScattering of blue light by the atmosphereDust in spaceRed light scatteringQuestion 6 of 207. What happens if too many milk drops are added in the scattering experiment?The reddish color intensifiesThe reddish color disappearsThe blue tinge disappearsThe water turns blackQuestion 7 of 208. What type of shadow is formed by a point source?Umbra and penumbraOnly umbraOnly penumbraNo shadowQuestion 8 of 209. Why is a penumbra not seen with a point source?The light is too brightThe source is too small to create partial shadowsThe shadow is too darkThe screen is too closeQuestion 9 of 2010. What is scattering of light?Light bending around objectsLight spreading when hitting particlesLight forming shadowsLight turning into colorsQuestion 10 of 2011. What is seen from the front in the scattering experiment with turbid water?Blue lightRed-yellow lightGreen lightNo lightQuestion 11 of 2012. Why do we see dust particles in a beam of sunlight?They glow naturallyThey scatter the lightThey absorb lightThey reflect the beamQuestion 12 of 2013. What should be used to safely watch a solar eclipse?SunglassesNaked eyeSpecial gogglesTelescopeQuestion 13 of 2014. What type of eclipse involves the Earth’s shadow?Solar eclipseLunar eclipseOccultationZero shadowQuestion 14 of 2015. What happens to the shadow size as the screen moves further from a big ball?Umbra and penumbra shrinkUmbra and penumbra grow biggerUmbra disappearsPenumbra disappearsQuestion 15 of 2016. Why can we read in the shade?Shadows reflect lightScattered light illuminates the areaThe Sun is directly overheadNo light is blockedQuestion 16 of 2017. What is an extended source of light?A tiny holeA large light source like a bulbA laser pointerA single rayQuestion 17 of 2018. What natural phenomenon involves the Sun, Moon, and Earth in a straight line?ScatteringEclipseZero shadow dayOccultationQuestion 18 of 2019. Why does the sky show various colors at sunrise?Due to eclipsesDue to scattering of sunlightDue to shadowsDue to the MoonQuestion 19 of 2020. What is a common superstition mentioned about eclipses?They cause rainThey need lemon-chilli tied to carsThey make shadows disappearThey turn the sky greenQuestion 20 of 20 Loading...
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