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Worksheets2009 Released 11-20
Total questions: 10
Worksheet time: 8mins
Name
Class
Date
1.
C + O2 ---------> CO2According to this equations, what happened to the carbon and oxygen?
a)
The combined chemically to form a new compound.
b)
They combined chemically to form carbon and oxygen.
c)
They combined physically to form a new mixture.
d)
They combined physically to form a new element.
2.
The average distance from Earth to the Moon is 384, 401 km. How is the distance from Earth to the Moon expressed in scientific notation?
a)
3.84 x 103 km
b)
384 x 103 km
c)
3.84 x 105 km
d)
3.84 X 106 km
3.
Which energy transformation occurs first in a col burning power plant?
a)
Chemical to thermal energy
b)
Thermal to mechanical energy
c)
Thermal energy to electrical energy
d)
Mechanical energy to electrical energy
4.
This picture shows a radiometer. It is designed to be placed in a sunny window. One side of each thin blade of the radiometer is painted black, and the other side is painted white. The Sun's rays strike the blades, and the device begins to spin. The device is powered by which kind of energy.
a)
Wind
b)
Solar
c)
Geothermal
Geothermal
Geothermal
d)
Electrical
5.
This data table shows the results of an investigation. What information should be used for the column headings marked X?
a)
Trial number
b)
Number of seeds
c)
predicted value for the results
d)
Average of the data in each column
6.
Which of the following is an example of potential energy?
a)
A glass jar sitting on a shelf
b)
A flag waving in the wind
c)
A ball rolling along a sidewalk
d)
A battery powering a radio
7.
What is the role of the Orca in this food chain?
a)
Producer
b)
First order consumer
c)
Second order consumer
d)
Third order consumer
8.
A car manufacturer reduces the mass of a car by 250 kg. If the new design is otherwise identical to the old design, how will the new car compare to the old car?
a)
It will have greater gravitational attraction to the road.
b)
It will require more fuel to operate.
c)
It will need less force to move.
d)
It will release more gas emissions.
9.
A student predicts that similar ice cubes will melt faster in a microwave than in a pot on the stove. How should this hypothesis be tested?
a)
Measure and compare the volume of the pot and the microwave.
b)
Determine the volume of liquid water made by each ice cube.
c)
Observe and record the time for each ice cube to completely change to a liquid.
d)
Identify and record the temperature of each ice cube before each trial
10.
Which of these best describes the particle motion taking place as CO gas is exposed to freezing temperatures?
a)
The particles decrease in speed.
b)
The particles move with more force.
c)
The motion of the particles become random.
d)
The motion of the particles is unchanged.
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