click below
click below
Normal Size Small Size show me how
Ch. 12 Energy
Energy
Question | Answer |
---|---|
The loudness of a sound is its _____ | volume |
how high or low a sound is | pitch |
Electricity travels through a ______ | circuit |
How is sound made? | vibration |
Why do windows look bright and shiny? | they reflect light |
What type of material can you NOT see through? | opaque |
How do you open and close a circuit? | a switch |
What type of material allows heat to pass through quickly | conductor |
What type of material doesn't allow heat to travel through quickly? | insulator |
What do we measure temperature in? | degrees |
What do you need to complete a circuit | wire, bulb, dry cell battery, switch |
What happens to matter when it loses heat? | the particles slow down. |
How does a thick layer of fat help walruses? | keep them warm |
Why does a spoon look uneven in a glass of water? | light refracts the object |
Name 2 forms of energy we talked about in this chapter? | sound and light |
I have a complete circuit with a dry cell, lightbulb, switch and wire connecting it all, what can I do to make the light bulb brighter? | add another dry cell or battery |
I have a glass cup and an insulated cup in the sun. What will happen to the water in the glass cup? | water will warm up |
I have a glass cup and an insulated cup in the sun. What will happen to the water in the insulated cup? | will not be as warm as the glass cup will not heat up as quickly |
What vibrates in your ear when you hear sound? | ear drum |
In a pond on a sunny day, you try to pick up a pebble off the bottom. Why might you miss the pebble? | The water is refracting the light from the sun making it look the like pebble is in another place. |
What keeps cats and dogs warm in the cold weather? | fur keeps them insulated |
What happens to the food dogs and cats eat? | turns into energy |
Which kind of object would make a shadow in the Sun? | an opaque object, light can not pass through. |