Einsteinonline

		Click the sound button to hear the question. Read the question. Click on the answer or type your answer in the box. Work through to the end of the questions.

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Earth, Sun and Moon: You will learn about shadows. You will learn about compass directions.

Changing sounds: how sounds are produced. You will learn how different sounds are made.




		1. The sun rises in the : a) West b) East c) South




		2.Shadows are shorter at midday because : a) the sun is directly overhead b) the sun is low in the sky c) the moon is directly overhead




		3. Shadows are formed when light : a) is turned on b) is not present c) cannot pass through an object




		4.The sun appears to change direction in the sky because : a) the sun moves around the earth b) the earth rotates around the sun c) the sun and the earth are joined




		5. On a compass, South-West is directly opposite : a) South-East b) North-West c) North-East




		6. How are sounds made? a) when things are dropped b) when objects or materials vibrate c) when there is noise




		7. If you hold a ruler to a desk, and tap one end of it, you will hear a noise. Why? a) the ruler vibrates b) the desk vibrates c) the room is noisy




		8. If you hold a ticking clock under water, would it sound as loud as before? a) yes, because it's the same clock b) no, because the water will reduce the sound c) no, because the water will stop the clock




		9. A man digging a hole with a pneumatic drill has ear protectors on. How do they work? a) they prevent the drill from working b) they prevent most of the sound waves travelling through the air from reaching his ears c) they change the pitch of the sound




		10. From the following, which is the best for allowing sound to reach our ears? a) brick b) glass c) air


	Tip from the Top Ž
	The sun rises (comes up in the morning) in the East and sets (goes down at night) in the West. A shadow is formed when light cannot pass through an object. The length of shadows depends on the position of the sun in the sky. Sound travels in sound waves. Try to find a picture of a sound wave. It will help you to understand more about sound. Sound can reach us through many objects.