Heat, Light, eat, Light, and Sound nd Sound CXEFL07ARD01_LLR03_Cv.indd 3 XEFL07ARD01_LLR03_Cv.indd 3 2/18/05 5:26:49 PM /18/05 5:26:49 PM

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Visit The Learning Site! www.harcourtschool.com Orlando Austin New York San Diego Toronto London Heat, Light, and Sound Heat . . . . . . . . . . . . . . . . . . . .2 Other Sources of Heat. . . . . .4 Light . . . . . . . . . . . . . . . . . . . .5 Light and Shadows . . . . . . . .6 Sound . . . . . . . . . . . . . . . . . . .8 Different Sounds . . . . . . . . .10 CXEFL07ARD103_LLR.indt 1 XEFL07ARD103_LLR.indt 1 3/7/05 4:26:56 PM /7/05 4:26:56 PM

2 Heat is a kind of energy. Heat from the sun warms the Earth. Heat The sun warms land, air, and water. CXEFL07ARD103_LLR.indt 2 XEFL07ARD103_LLR.indt 2 3/4/05 12:13:24 PM /4/05 12:13:24 PM

3 Dark things warm up quickly. Light things warm up more slowly. Which part of the street gets hot faster? CXEFL07ARD103_LLR.indt 3 XEFL07ARD103_LLR.indt 3 3/4/05 12:13:34 PM /4/05 12:13:34 PM

4 A lamp gives off heat. A stove gives off heat. stove lamp O ther Sources of Heat CXEFL07ARD103_LLR.indt 4 XEFL07ARD103_LLR.indt 4 3/4/05 12:13:45 PM /4/05 12:13:45 PM

5 Light is energy that lets us see. The sun gives off light. So do lamps. Light spotlight sunlight CXEFL07ARD103_LLR.indt 5 XEFL07ARD103_LLR.indt 5 3/4/05 12:14:02 PM /4/05 12:14:02 PM

6 Light moves. It passes through clear things. glass door Light and Shadows CXEFL07ARD103_LLR.indt 6 XEFL07ARD103_LLR.indt 6 3/4/05 12:14:17 PM /4/05 12:14:17 PM

7 Things that are not clear block light. When light is blocked, shadows form. shadow shadow CXEFL07ARD103_LLR.indt 7 XEFL07ARD103_LLR.indt 7 3/8/05 2:14:52 PM /8/05 2:14:52 PM

8 Sound is energy you hear. Sound You could hear many sounds on this street. CXEFL07ARD103_LLR.indt 8 XEFL07ARD103_LLR.indt 8 3/4/05 12:14:42 PM /4/05 12:14:42 PM

Sound is made if something vibrates. Guitar strings vibrate to make sound. 9 1/27 STUDIO please mark the boy and callout to bring in as a random. thanks ef guitar vibrating strings CXEFL07ARD103_LLR.indt 9 XEFL07ARD103_LLR.indt 9 3/8/05 2:45:15 PM /8/05 2:45:15 PM

10 You can hear a sound‘s loudness. A whisper is soft. A shout is loud. Dif ferent Sounds whispering shouting CXEFL07ARD103_LLR.indt 10 XEFL07ARD103_LLR.indt 10 3/4/05 12:15:03 PM /4/05 12:15:03 PM

11 You can hear a sound’s pitch. Pitch is how high or low a sound is. This musical instrument has a low pitch. This whistle has a high pitch. CXEFL07ARD103_LLR.indt 11 XEFL07ARD103_LLR.indt 11 3/4/05 12:15:14 PM /4/05 12:15:14 PM

Vocabulary heat, p. 2 light, p. 5 shadow, p. 7 sound, p. 8 vibrate, p. 9 loudness, p. 10 pitch, p. 11 12 CXEFL07ARD103_LLR.indt 12 XEFL07ARD103_LLR.indt 12 3/4/05 12:15:23 PM /4/05 12:15:23 PM

School-Home Connection Tell a family member what you have read about heat, light, and sound.Talk with the family member about sources of heat, light, and sound at home. Hands-On Activity 1. Use rubber bands and a box to make a homemade guitar. 2. Pluck the strings. Describe the sound each string makes. Think About the Reading 1. What questions do you have after reading this book? 2. How can you find answers to these questions? CXEFL07ARD103_LLR_iCV.indd 3 XEFL07ARD103_LLR_iCV.indd 3 3/4/05 12:28:31 PM /4/05 12:28:31 PM