Learning Competency:
Describe the changes in the position and length of shadows in the surroundings as the position of the Sun changes S4ESIVh-9
Background Information for the Learners:
Hello learner! This time you have come to learn that as the sun rises in the morning, or sets in the afternoon, it is low on the horizon, and its light rays are slanted as they hit the ground, so longer shadows are formed. When the sun is high or nearly above the horizon, the sunlight strikes the ground at nearly a right angle, so shorter shadows are formed. When the sun is directly above the horizon, the light rays of the sun strike directly above the objects so no visible shadow is seen on the ground since the shadow of the entire body would fit in its footprints.
The changes in the position and length of shadows in the surroundings depend on the angle at which the sunlight strikes the object to the ground.
Directions: A. Read each statement and put an O on the box before the number if it is TRUE and an X mark if it is FALSE.
1. The sun is not a source of light.
2. Light travels through transparent objects/ materials.
3. The shadow of the object is larger when the object is near to the light source.
4. At sunset, the shadow of an object is the shortest.
5. At sunrise, the shadow of an object is the shortest.
Read each statement, then draw a star on the blank if the statement is correct and if the statement is incorrect, encircle the word that makes it incorrect.
____1. Fire is another source of light.
_____2. We can only see things when there is light.
_____3. Light cannot travel through transparent materials.
_____4. Shadows are the same size with the object blocking the light.
_____5. Shadows are the same shape with the object blocking the
light.
Answers
Answer:
1 is correct
2 is correct
3 is incorrect
4 is correct
5 is incorrect
Answer:
True or False
1. False X
2. True O
3. True O
4. False X
5. False X
Explanation:
1. Fire is another source of light. *
2. We can only see things when there is light. *
3. Light cannot travel through transparent materials.
4. Shadows are the same size as the object blocking the light.
5. Shadows are the same shape as the object blocking the light. *
Shadows are formed when light travels in straight lines. When an object or material is placed in the path of the rays of light, the object blocks the light to pass through it, forming its shadow.
As light moves faraway from the object, the shadow becomes smaller. Shadows can also change their shape.
As light moves closer, the shadow becomes longer and wider.
As light moves away, the shadow becomes shorter and thinner.