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Sagot :
Answer:
Key Science Concepts:
- Indoors, you can change the size of a shadow by moving your body or the object closer to or farther from the light.
- Shadows grow bigger and fuzzier as the object moves closer to the light source, and smaller and sharper as the object moves farther away.
Materials:
Two measuring tape
Transparent tape
Opaque objects that block light, such as a cup, toy car or ball
Flashlight
Table
Light-colored wall
Dimmed workspace
Paper
Pen
Procedure:
Switch on the flashlight and point it to the wall. What do you see on the wall once you switch on the light? How does the appearance of the wall change when you switch the light on?
Switch the flashlight off but do not move it. Take the object and place it next to the flashlight, 25 centimeters (10 inches) away. Then move it toward the wall until it is located 20 centimeters (eight inches) away from the wall. What do you think you will see once you switch on the light?
Switch on the light and look at the wall. Does the object placed on the table form a shadow? Can you explain why or why not?
Move the object directly between the wall and the flashlight so it sits on top of the measuring tape. Place it at the 20-centimeter (eight-inch) mark of the measuring tape. How will the shadow change once you move the object?
Switch on the light. What do you see on the wall this time? What shape does the shadow have? If there is a shadow, take the second measuring tape and measure the shadow’s height from the table surface to its top and write its size on a piece of paper. How big is the shadow?
Once you have measured the shadow’s height, move the object closer to the wall along with the measuring tape until it reaches the 10-centimeter (four-inch) mark. Then measure the height of the shadow again and record its size. How does the size of the shadow change when you move it farther away from the light source? Do you notice any other differences besides the size?
Move the object closer to the flashlight and place it at the 40-centimeter (16-inch) mark on the measuring tape. Again, measure and record the height of the shadow. Does the shadow get smaller or bigger when you place the object closer to the light source?
Look at your results on a piece of paper. If you like, you can make a graph that shows the distance from the light source on the x-axis and the size of the shadow on the y axis. How is the size of the shadow dependent on the distance of the object from the light source? Can you explain your results?
Extra: Play around with different objects. Choose different materials or different sizes. Or make your own shapes! Do they all form a shadow? Why or why not?
Extra: Introduce a second light source by placing two flashlights in front of the wall. How do the shadows of objects that you put in between both flashlights and the wall look? How do they differ from shadows using just one light source?
Extra: Try to point your flashlight onto the object from different angles. How does the angle change the appearance of the shadow?
Sorry if it's too long...Correct me if it's wrong...
#Hope it helps
Brainliest me pls
Thankss ^v^
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