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WorksheetsCAST REVIEW
Total questions: 25
Worksheet time: 13mins
What is the correct formula for speed?
Speed = Distance x Time
Speed = Distance/ Time
Speed = Time/ Distance
At 8 am, Lillian leaves her house and walks to school, heading West. She arrives at 8:30 am. The school is 900 meters away from her house. Find her velocity.
30 meters/min West
900 meters/min West
30 meters/min
900 meters/min
What is the difference between speed and velocity?
Speed includes direction and velocity does not include direction.
Velocity includes direction and speed does not include direction.
Speed has a measurable quantity and velocity cannot be measured
Speed and velocity have no differences.
The distance versus time graph below shows the movement of an object over a period of time. What is the average speed of the object?
0.5m/min
2 m/min
25 m/min
50 m/min
A spring scale is pulled downward and readings are recorded. If the string is pulled 6.0 cm, the spring scale should read
15 N
16 N
17 N
18 N
Which object below will have the greatest amount of force?
Object R
Object S
Object T
Object U
Which of the following correctly describes the structure of the compound, sodium chloride (NaCl)?
covalent compound with elements that share electrons.
covalent compound with crystal structure of repeating positive and negative ions.
ionic compound with elements that share electrons.
ionic compound with crystal structure of repeating positive and negative ions.
Fluorine is an element with an atomic number of 9. What are two differences between the isotopes Fluorine18 and Fluorine-19?
They both have different number of protons and different number of neutrons. B. They both have different D. They both have different number of neutrons and different number of electrons.
They both have different number of neutrons and different mass number.
They both have different number of electrons and different mass number.
They both have different number of neutrons and different number of electrons.
The __________is a positively charged subatomic particle that is located in the nucleus of an atom.
neutron
proton
electron
When a solid changes into a liquid, the atoms in a liquid will ____________the atoms in a solid.
move the same amount as
move more than
ve less than
move at a slower rate
The atoms in a ______________are more tightly packed together while the atoms in a ____________move freely and independently.
solid, liquid
iquid, gas
solid, gas
gas, solid
Which of the following does not describe the inner planets (terrestrial planets)?
relatively small in size
gas giants
rocky solid surfaces
high density
The galaxies pictured below would best be described as_________________.
barred galaxies.
spiral galaxies.
irregular galaxies.
elliptical galaxies.
What is the difference between speed and velocity?
Speed includes direction and velocity does not include direction.
Velocity includes direction and speed does not include direction.
Speed has a measurable quantity and velocity cannot be measured
eed and velocity have no differences.
You collect data on an object's distance over time and you put the information on a graph. The line on the graph is a straight diagonal line with a constant slope. You can conclude that the relationship between distance and time is ___________.
linear
nonlinear
quadratic
exponential
A group of students wanted to test the scientific question, “Does the mass of a toy boat affect the speed of the toy boat in the water?” Based on the scientific question, which of the following is not a reasonable hypothesis to test the question above?
If the mass of the toy boat increases, then the speed of the toy boat will increase.
if the mass of the toy boat increases, then it will not affect the speed of the toy boat.
If the mass of the toy boat increases, then the speed of the toy boat will decrease.
If the distance of the toy boat increases, then the mass of the toy boat will decrease.
The mass of a rectangular prism is 60 grams. The length of the rectangular prism is 5 cm, the width is 3 cm, and the height is 2 cm. What is the density of the rectangular prism?
2 g/cm3
6 g/cm3
0 g/cm3
0 g/cm3
A piece of balsa wood floats on the surface of a pond because the water exerts _______________
an upward force equal to the weight of the wood.
a downward force equal to the weight of the wood.
an upward force equal to the weight of the displacement water.
a downward force equal to the weight of the displacement water.
The table below shows the mass and volume of four different samples. Given that the density of water is equal to 1 g/ml, which sample is most likely to float in water?
1
2
3
4
Object "R" has a mass of 50 g and a volume of 100 ml. Find the density of the object.
0.5 g/ml
2.0 g/ml
50 g/ml
00 g/ml
Which of the following substance is an acid?
drain cleaner
detergent
water
lemon juice
When ice changes into water, it is an example of a ________change. Also, when water changes into water vapor, it is an example of a _______change.
physical, physical
chemical, chemical
physical, chemical
chemical, physical,
The chemical equation below is NOT balanced. Which equation below is balanced?
2N2 + 3H2 ----> 2NH3
3N2 + 2H2 ----> 6NH3
N2 + 3H2 ----> 2NH3
N2 + H2 ----> N2H3
When a chemical reaction occurs, the products that are made will have physical and chemical properties that are _______________reactants.
the same as
similar to
opposite of
different from
Stars, including the Sun, produce light and heat through an exothermic reaction called _________.
neutron reaction
neutron fusion
lear fission
nuclear fusion
