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WorksheetsMCA Review - Physical Science
Total questions: 30
Worksheet time: 15mins
Name
Class
Date
1.
The flow that transfers heat within a fluid is called a convection current.
a)
True
b)
False
2.
The transfer of energy carried in rays is called convection.
a)
True
b)
False
3.
How does heat move?
a)
From a warmer to a cooler object
b)
From a cooler to a warmer object
c)
Toward a hot object
d)
Away from a cold object
4.
How is energy from the sun transferred?
a)
Radiation
b)
Conduction
c)
Convection
5.
By what process does a glass lens focus light?
a)
congregation
b)
refraction
c)
reflection
d)
dispersion
6.
Pauline needs to measure the sliding friction of a brick. How should she go about doing this?
a)
attach the brick to a string and then to a spring scale and read the force needed to quickly lift the brick off the ground
b)
drag the brick by a string attached to a spring scale along the surface of a table at a constant speed and read the force
c)
drag the brick by a string attached to a spring scale so that it gradually speeds up
d)
hang the brick from a string attached to a spring scale and read the force
7.
Which of the following could be used to convert light energy into electric energy?
a)
a chemical storage battery
b)
a windmill
c)
rotating coils in a magnetic field
d)
a solar cell
8.
Materials with more than one set of properties that can be separated by physical means is a(n)
a)
element
b)
mixture
c)
pure substance
d)
compound
9.
In the absence of air resistance, which of these objects will fall at the fastest rate when dropped?
a)
They will fall at the same rate
b)
The ball with a mass of 10 kg
c)
The ball with a mass of 25 kg
d)
The ball with a mass of 75 kg
10.
The height of a wave crest is called
a)
amplitude
b)
crest
c)
wavelength
d)
frequency
11.
The number of protons in a neutral atom is equal to the number of?
a)
neutrons
b)
electrons
12.
A student connects three identical light bulbs in parallel to a battery as shown in the diagram. What happens when the student removes one of the light bulbs from its socket?
a)
the other light bulbs will reamin on, one less bright and the other the same brightness as before
b)
All the light bulbs go out
c)
The other light bulbs remain on, one brighter and the other less bright than before
d)
The other light bulbs remain on and will be equally bright
13.
Which action involves a chemical change?
a)
adding sugar to tea
b)
making ice cubes
c)
baking a cake
d)
cutting wrapping paper
14.
What force must be applied to the rope in the the pulley shown in the diagram to lift the 10-N block?
a)
5 N
b)
20 N
c)
15 N
d)
10 N
15.
The weight of a person on Earth is 6 times his or her weight on the moon. What type of force is responsible for the person's weight?
a)
mechanical
b)
gravitational
c)
electromagnetic
d)
inertial
16.
A piece of blue paper appears blue because the paper
a)
refracts all colors of light except blue
b)
absorbs all colors of light except blue
c)
is transparent to all colors of light except blue
d)
reflects all colors of light except blue
17.
What is a material called that easily carries an electric current?
a)
semiconductor
b)
diode
c)
conductor
d)
insulator
18.
Which statement about magnets best matches the diagram?
a)
the Earth's core produces a magnetic field
b)
opposite charges repel one another and like charges attract
c)
like charges repel one another and opposite charges attract
d)
magnets always repel other magnets
19.
Which state of matter has a definite volume but a variable shape?
a)
solid
b)
liquid
c)
gas
d)
plasma
20.
The International System of Units - SI (Metrics) is a standardized system of measurement used to express fundamental quantities in metric units. Which of the following units are used to measure the fundamental quantities of LENGTH, MASS, and TIME, respectfully, in the SI system?
a)
second, meter, gram
b)
meter, gram, second
c)
gram, second, meter
d)
meter, second, gram
21.
In order to determine the speed of an object, what measurements must be made?
a)
time, distance, and volume
b)
distance and time
c)
distance and direction
d)
distance and mass
22.
The melting of wax is a physical change, yet the burning of wax is a chemical change. What is the primary difference between the physical change and chemical change of wax in a burning candle?
a)
Melted wax is a different phase of matter than solid wax
b)
Melted wax can be separated into other substances, while solid wax cannot
c)
The burning of wax forms a new compound, while the melting of wax does not
d)
A higher temperature is needed to burn wax than to melt wax
23.
Along a seashore, ocean and land breezes are produced primarily due to which method of heat energy transfer?
a)
convection
b)
conduction
c)
radiation
24.
A curtain blows in front of an open window. What does this tell you about the property of air?
a)
air is more dense than the curtain
b)
air is made of tiny particles of matter
c)
air's density is the same the curtain material
d)
air does not have mass
25.
Albert stirs a mug of hot chocolate with a metal spoon. What type of heat transfer is responsible for the spoon getting hot?
a)
convection
b)
conduction
c)
radiation
26.
The topside of a sidewalk begins to warm as the sun shines on it. Through what method of heat transfer does the top of the sidewalk increase in temperature?
a)
convection
b)
conduction
c)
radiation
27.
Soft drinks consist of a mixture of water, sugar, and flavoring, with carbon dioxide gas bubbled through it. Which of these ingredients would be considered the solvent?
a)
flavoring
b)
carbon dioxide gas
c)
sugar
d)
water
28.
How many different types of atoms are found in the element gold?
a)
2
b)
4
c)
1
d)
3
29.
Use the table to answer the following question:
Juan performed a flame test by burning a small amount of an unkown substance in the flame of a Bunsen burner. The flame turned blue. It is most likely that the unknown substance contained
Juan performed a flame test by burning a small amount of an unkown substance in the flame of a Bunsen burner. The flame turned blue. It is most likely that the unknown substance contained
a)
calcium
b)
copper
c)
sodium
d)
potassium
30.
Four people are pulling on a box with the forces shown in the diagram. If there are no other forces on the box, in what direction will it move?
a)
toward the right side of the diagram
b)
toward the bottom of the diagram
c)
directly toward Bill
d)
directly toward Diane
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