CH 8 Short Answers Flashcards
What is a suggested procedure for measuring volume by displacement? (6)
Place a container under the spout.
Fill the can until it begins to overflow (be careful of spills).
Wait until the flowing stops.
Dispose of the water in the container and carefully place the container back under the spout.
Slowly put the object into the can.
Collect and measure the volume of the displaced water
weight will change depending on where it is measured. You would weigh much less on the Moon because the force of gravity is not as strong as on Earth.
If you went to the Moon, your weight would change, but your mass would not.
What is the formula for volume?
Volume= L x W x H
How can we measure volume when the object does not have a regular shape? You may have noticed that whenever you take a bath, the water rises as you settle into the tub. Since you and the water cannot occupy the same space, your body displaces water (pushes it out of the way), which causes the water level to rise. This property can be used to find the volume of irregularly shaped objects and is called the “finding volume by displacement” method.
When objects are too big to fit in a graduated cylinder, volume by displacement is measured using an overflow can. An overflow can has a spout near the top which allows displaced water to escape. If an object floats slightly, thin rods can be used to push it just under the water. Here is a suggested procedure for measuring volume by displacement:
Place a container under the spout.
Fill the can until it begins to overflow (be careful of spills).
Wait until the flowing stops.
Dispose of the water in the container and carefully place the container back under the spout.
Slowly put the object into the can.
Collect and measure the volume of the displaced water
