SELF LEARNING KIT GRADE 4 QUARTER 4 MODULE 6, Lecture notes of Earth science

Download SELF LEARNING KIT GRADE 4 QUARTER 4 MODULE 6 and more Lecture notes Earth science in PDF only on Docsity! 1 LENGTH OF SHADOWS AS THE POSITION OF THE SUN CHANGES For Science Grade 4 Quarter 4 / Week 6 2 FOREWORD This self-learning kit will serve as a guide in describing the changes in the position and length of shadows in the surroundings as the position of the sun changes. It will be your aid as you learn new ideas and enrich your existing knowledge about scientific concepts. In this learning you will gain knowledge in describing the changes in the position and length of shadows in the surroundings as the position of the sun changes. 5 ACTIVITY 2 Study each illustration. Answer the questions that follow. Write the letter of your answer in your notebook. https://www.nagwa.com/en/worksheets 1. When the sun is high in the sky, the shadow is __________? A. Shorter C. Bigger B. Longer D. Taller 2. When the sun is low in the sky, the shadow is __________? A. Shorter C. Bigger B. Longer D. Taller https://www.nagwa.com/en/worksheets 6 3. At what time of the day the shadows are the shortest? A. 9:00 am C. 6:00 pm B. 2:00 pm D. 12: 00 noon 4. What is the best time of the day can we do our outdoor activities like playing? A. Late morning and late afternoon C. Noon and Midnight B. Midmorning and midafternoon D. Sunrise and sunset 5. Does the length and position of shadows in the surroundings affect our daily activities, especially outdoor activities? Why A. Yes, because we can determine the time of the day. B. No, because we can do our activities even without determining the shadows. C. No, because we cannot do any activities. D. Yes, because we cannot determine the time of the day. II. WHAT I NEED TO KNOW Light and Shadow A. How are shadows formed? www.st.austins.st.helens.sch.uk light rays shadow 7 Have you ever been followed by your shadow? Or have you ever followed it? When there is no light there is no shadow. As light travels in a straight line, then it is blocked with an object, there is a formation of shadows. The object does not let the light pass through it. So, shadow is formed when light travelling to a source is blocked.  Based on the illustration, what object blocked the rays of the sun?  What is formed? The tree blocked the rays of the sun which caused the formation of the shadow. B. Why do shadows change in position and length? Science 4, Learners Material page 304 Study the picture above. Answer the questions that follow. 1. Describe the shadow of the pole at 8:00am, 10:00 am, and 12:00 noon? 2. At what time is the shadow of the pole longest? Why is this so? 3. At what time is the shadow shortest? Why? 10 2. What happens when a light ray cannot pass through an object/material? A. The object creates a dark spot. B. The object creates a shadow. C. The object creates a reflection. D. The object creates a light spot. 3. Which of these pictures is the correct position of the shadow? https://www.nagwa.com/en/worksheets A. B. 4. What is the position of the sun when the shadow is shortest? https://www.nagwa.com/en/worksheets A. The shadow is shortest when the sun is directly above an object. B. The shadow is shortest when the sun is low in the sky. C. The shadow is shortest when the sun is high in the sky. D. The shadow is shortest when the sun is hiding behind the cloud. 11 5. What is the position and length of a shadow at different times of the day? https://www.blendspace.com/lessons/b6V3agC1ZMVm5g/shadows A. The position and length of shadows change. B. The position and length of shadows do not change. C. The position and length of shadows remain the same. D. The position and length of shadows stay in one place. B. Directions: Fill the missing words. Choose your answers from the words printed in the flashlight. Do it in your notebook. Light and Shadow Light travels in a (1) _____________ line from a source of light that bounces off an object. When an object blocks out the (2) __________, a (3) ___________ is formed. Shadows are (4) ____________ at midday and (5) _____________ at the beginning and end of the day. shadow straight shortest light longest https://www.collinsdictionary.com/dictionay/english/torch 12 REFERENCES Books: Science Grade Learner’s Materials, (pages 303-305), First Edition 2015. Science Grade Four Teacher’s Guide, (pages 343-347), First Edition 2015. Websites: https://www.blendspace.com/lessons/b6V3agC1ZMVm5g/shado ws https://www.clipart-library.com/student-line-cliparts.html https://www.nagwa.com/en/worksheets https://www.collinsdictionary.com/dictionay/english/torch