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- 1. Multiple Choice
Students placed four round objects in an aquarium full of water. Some of the objects floated and others sank, as shown in the illustration above. Which of the following is a correct interpretation of the data?
Objects W and X are less dense than water, and objects Y and Z are more dense than water.
Objects W and Y are less dense than water, and objects X and Z are more dense than water.
Objects W and Y have the same density as water and objects X and Z are more dense than water.
Objects W and Y are more dense than water and objects X and Z are less dense than water.
- 2. Multiple Choice
Students were asked to separate a mixture of sand and salt. One group decides to put the mixture into a beaker of water first. Which of the following should they do next to separate out the sand and salt?
Use a magnet to pull the sand from the water, then freeze the water.
Let the water stand until the sand settles to the bottom and the salt floats to the top.
Boil the water from the sand and collect the vapor, which will have the salt.
Pour the water through filter paper to remove the sand, then evaporate the water.
- 3. Multiple Choice
The illustration shows a hand generator. Turning the handle of the generator causes the bulb to light up. This device changes what type of energy into what other type?
Mechanical to electrical
Electrical to sound
Thermal to mechanical
Light to thermal
- 4. Multiple Choice
A student attached the parts as shown here and the bulb did not light. The most likely reason the bulb does not light is because -
batteries can’t provide electric energy
the flow of electricity can’t make a bulb light
the switch must be open for electricity to flow
yarn does not conduct electricity
- 5. Multiple Choice
In the illustration above, a light bulb is shining above a bowl of water. The arrows show four possible behaviors of light rays. Which one shows the behavior of light that is being reflected?
W
Y
X
Z
- 6. Multiple Choice
Students taped a rubber band to a box of washers, then dragged the box across four different surfaces, using the rubber band. The students are using the distance the rubber band stretches to measure the amount of friction each surface exerts on the box. Based on the observations shown here, which surface had the greatest amount of friction?
Surface A
Surface B
Surface C
Surface D
- 7. Multiple Choice
Students built a model of the water cycle by putting water in the bottom of a plastic bottle and then shining a lamp on it. What part of the model represents the Sun’s energy?
Lamp shining on bottle
Tiny droplets forming at top of bottle
Drops running down the side of bottle
Water sitting in the bottom of bottle
- 8. Multiple Choice
Which of the following is an example of data that would be considered weather rather thanclimate?
Southeast Asia experiences most of its precipitation from April to September.
The Chicago area received 17 cm of snow on December 4, 2012.
More than 80% of Australia receives less than 60 cm of rain during the entire year.
The average annual minimum temperature in Central Europe is -23 °C to -18 °C.
- 9. Multiple Choice
Which of the following descriptions represents a region’s climate?
Tomorrow it will be warm and sunny in Lubbock, Texas.
It was cold and rainy today in Seattle, Washington.
Winters are very cold in Boston, Massachusetts.
Last week it rained three days in New Orleans, Louisiana.
- 10. Multiple Choice
Energy waves that bend when passing through a medium are being
reflected
refracted
transmitted
absorbed
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