1) the light travels in .... line a) straight b) bent c) wavy d) zigzag e) prism f) round 2) There are some facts about shadow! a) shadow is dark b) shadow has no details c) shadow is colorful d) shadow can change size e) shadow is reflection f) shadow forms when the light is blocked by an object 3) before people had clocks, people told time by .... a) water b) sundial c) reflection d) image e) shadow f) silhouette 4) Light intensity can be measured using .... a) a digital light meter b) a force meter c) a balanced scale d) a sound level meter e) a ruler f) a pencil 5) people who need to measure light intensity are .... a) a chef b) a teacher c) a filmmaker d) a gardener e) a test match cricket f) an officer

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