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Science – Unit 2. Unit 2 – Energy Week 2 November 15-19, 2010. How high or low a sound is. pitch. To quickly move back and forth. vibration. The loudness or softness of a sound. volume. A sound bouncing back from an object. echo. To take in. absorption. To bounce back. reflection.
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Science – Unit 2 Unit 2 – Energy Week 2 November 15-19, 2010
To quickly move back and forth. vibration
To take in. absorption
To bounce back. reflection
If an object vibrates slowly, it will make a __________ sound. low
Which of the following sounds could cause possible eardrum damage? • Singing birds • Jet plane taking off • Window air conditioner jet plane taking off
Sound waves travel slowest through which form of matter? • Solid • Liquid • Mud • Gas gas
Sound waves travel fastest through which form of matter? • Solid • Liquid • Gas • Balloons solid
Which sound takes more energy to produce? • Soft Sound • Happy Sound • Sad Sound • Loud Sound loud sound
Which is not a way that sounds help wild animals stay alive? • To keep warm • To find food • To warn one another of danger to keep warm
Which of the following loud sounds can keep you safe? • Jackhammer • Loud music • Siren on an ambulance • Birds singing siren on an ambulance
Dark-colored or dull objects absorb a lot of light which causes these objects to become __________. warmer
Name two animals that use echoes to find food. bats and dolphins
If you were going for a walk in the desert, would you rather wear black or white clothing? Why? White because it reflects light.
The ability to cause change. Energy
Heat that is produced in an engine but is not used for any purpose. waste heat
Electricity moves from a battery through wires to a bulb, and then back to the battery in a __________. circuit
When a bell makes the air __________, sound is produced. vibrate
The energy of motion. kinetic energy
