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Worksheets

KB Science Review

Total questions: 170

Worksheet time: 3hrs 50mins

Name
Class
Date
1.
How many hearts does an octopus have?
a)
1
b)
5
c)
3
2.
Water can actually...
a)
Boil and freeze at the same time
b)
Hold its shape when put in 1,777777 degree heat
c)
Melt
3.
What does a cracked egg look like under water?
a)
A jellyfish
b)
A flower
c)
A plastic bag
4.
How does the maker of this quiz know this stuff?
a)
She deeply researched
b)
She looked up cool science facts
c)
She learned them at school
5.
What is NOT true about cats?
a)
Their tails help them keep balanced
b)
They always land on their feet
c)
Their whiskers help them find prey
6.
How many minutes does it take a photon to travel to earth from the surface of the sun?
a)
8
b)
20
c)
1
d)
30
7.
What is the largest living structure on earth?
a)
A blue whale
b)
The Great Barrier Reef
c)
The Grand Canyon
8.
What shape are the pupils of the oriental fire bellied toad?
a)
Triangle
b)
Circle
c)
Oval
9.
Here is a science joke. A photon and an electron were going on a trip. The electron said to the photon, where is your luggage? The photon said back, I'm traveling light. :) Pick @@@ for your answer. 
a)
Don't pick this one
b)
@@@
10.
How many hearts does a worm have?
a)
5
b)
3
c)
1
11.
Why do flies rub their legs together?
a)
They are cleaning themselves 
b)
They are exited
c)
They are using echolocation 
d)
It is their instincts
12.

A mixture of decaying organic materials such as rotting vegetables and lawn clippings.

(a)  

13.

A combination of chemical nutrients including nitrogen, phosphorus and potassium.

(a)  

14.

The amount of matter in an object.

(a)  

15.

A small, usually hard structure that contains the embryo of a plant.

(a)  

16.

A mixture of rock fragments (usually sand, silt, and clay) and organic matter.

(a)  

17.

A factor that can be changed in an experiment.

(a)  

18.

A controlled experiment is also called a(n)

a)

variable test

b)

legit experiment

c)

fair test

d)

smart science stuff

19.

When experimenting with the growth of a plant, a scientist uses the same type of plants, the same amount of light, same amount of water, and 2 different fertilizers. What type of variable is the fertilizer?

a)

Dependent

b)

Independent

c)

Control

d)

Compound

20.
Students used various temperatures of water to see which one dissolved candy faster. 
What was the Independent Variable?
a)
Amount of Candy
b)
Amount of Water
c)
Temperature of Water
d)
Time for Candy to Dissolve
21.
In the experiment pictured, a student is testing the effect of the amount of fertilizer on plant growth.  Which of the following is NOT a constant in the experiment?
a)
amount of water
b)
angle of light
c)
type of plant
d)
amount of fertilizer
22.
In the experiment shown, plant A received 50 mL of coke each day, plant B received 50 mL of juice, and plant C received 50 mL of water.  Every day for one week, plant growth was measured.  Which group served as the control group?
a)
Plant A
b)
Plant B
c)
Plant C
d)
There was no control group
23.
An explanation a scientist makes that we can test to see if it is true or not is a _________.
a)
hypothesis
b)
theory
c)
law
d)
question
24.
Observations made during an experiment are called:
a)
data
b)
problems
c)
conclusions
d)
questions
25.
Students are growing plants in the dark or in the light to see which grows better.  They put 3 seeds in the dark and 5 seeds in the light because they know seeds are more likely to dry out in the light. 
How could this experiment be improved?
a)
Put all plants in the light.
b)
Put all plants in the dark (where they sprout better)
c)
Put the same number of seeds in each container.
d)
put all the plants in the light so they grow better
26.

Match the following

a)

1.

decaying organic material

b)

2.

plant embryos

c)

3.

chemical nutrient

d)

4.

Structure part of the plant

e)

5.

Photosynthesizing part of the plant

27.

It is the branch of science that deals with living organisms and their vital processes.

a)

Biology

b)

Chemistry

c)

Environmental Science

d)

Physics

28.

A branch of science that deals on understand on how organisms interact with the environment around them.

a)

Astronomy

b)

Botany

c)

Ecology

d)

Environmental Science

29.

Is the system responsible for the for the protection of the body from external environment to prevent disease and infections.

a)

Circulatory System

b)

Digestive System

c)

Endocrine System

d)

Integumentary System

30.

What do you call the largest organ in digestive system responsible for the nutrients absorption?

a)

Esophagus

b)

Large Intestine

c)

Stomach

d)

Small Intestine

31.

In chemistry refers to a simple substance that cannot be broken down into smaller parts or change into another substance.

a)

Chemicals

b)

Elements

c)

Ion

d)

Substance

32.

What are the most abundant elements in the earth's crust?

a)

Hydrogen and Helium

b)

Oxygen and Silicon

c)

Hydrogen and Carbon

d)

Oxygen and Carbon

33.

What do you call pseudoscience that concerns with understanding the influence of the stars on earthly events?

a)

Astrology

b)

Astronomy

c)

Cosmology

d)

Photometry

34.

It is a process by which particles flow through a substance, carrying heat energy from hotter to colder region.

a)

Conduction

b)

Convection

c)

Heat Transfer

d)

Radiation

35.

What theory accounts for diastrophic movement and for the folding and faulting along the edges of the continent?

a)

Continental Drift Theory

b)

Contraction Theory

c)

Convection Theory

d)

Plate Tectonics Theory

36.

Is the chart the geologist have subdivided the periods in earth history is measured periods spanning millions and billions of years.

a)

Geologic Time

b)

Geological Time

c)

Geologic Time Scale

d)

Geological Scale

37.

What type of observation is "The leaf is green?"

a)

Qualitative

b)

Quantitative

c)

Inference

d)

Conclusion

38.

What type of observation is "The pencil is 8 inches long?"

a)

Quantitative

b)

Qualitative

c)

Inference

d)

Conclusion

39.
What is an observation for this picture?
a)
The man is scared
b)
The man is going to get eaten
c)
There is a man in a kayak
d)
The man is paddling fast
40.
It is raining outside
a)
observation
b)
inference
41.
Change from standard form to scientific notation: 12,000,000
a)
12.0  x  107
b)
0.12  x  107
c)
1.2  x  106
d)
1.2  x  107
42.
Change from standard form to scientific notation:  0.000398
a)
39.8  x  10-5
b)
3.98  x  10-5
c)
3.98  x  10-4
d)
39.8  x  10-6
43.
Try to change the number back to standard form:  6.79  x  104
a)
679,000
b)
6,790
c)
67,900
d)
6,790,000
44.
Which of the following is correct scientific notation?
a)
20.35 x 104
b)
.2035 x 104
c)
2035 4
d)
2.035 x104
45.

If the exponent is a positive number the original number was...

a)

a really big number.

b)

a really small number.

46.

If the exponent is a negative number the original number was...

a)

a really large number.

b)

a really small number.

47.
There are __?__ significant digits in the number 23.012.
a)
1
b)
2
c)
4
d)
5
48.
There are __?__ significant digits in the number 0.00076
a)
2
b)
4
c)
5
d)
6
49.
There are __?__ significant digits in the number 2,000,000
a)
1
b)
2
c)
6
d)
7
50.

Science is . . .

a)

answering questions about the natural world.

b)

answering questions about "supernatural" phenomena.

51.

Science is . . .

a)

observable and measurable.

b)

based on faith.

52.

Science is . . .

a)

able to answer all questions.

b)

based on evidence.

c)

rigid.

53.

Science is not . . .

a)

absolute.

b)

made stronger by different lines of evidence.

c)

changing.

54.

Science is not . . .

a)

ongoing.

b)

a global human endeavor.

c)

based on authority.

55.

What is the basic unit of mass in the metric system?

a)

Liter

b)

Meter

c)

Gram

d)

Kilometer

56.
Which unit is the smallest?  
a)
km
b)
mm
c)
m
d)
cm 
57.
1000 m = ___________ km
a)
100
b)
10
c)
1
d)
0.1
58.
15.6 L = ___________ mL
a)
15,600
b)
156,000
c)
1,560,000
d)
15,600,000
59.

648 g = ____ mg

a)

6,480

b)

64,800

c)

648,000

d)

64.8

60.
What are the three base units?
a)
mass,length,grams
b)
meters,length,grams
c)
measuring,liters,games
d)
meters,liters,grams
61.

What is the smallest insect in the world?

a)

Ants

b)

Flies

c)

Worm

d)

Fairyflies

62.

What is the most colorful bird?

(a)  

63.

What is the most beautiful tree?

a)

Baobab Trees

b)

Japanese Maple

c)

General Sherman Sequioa Tree

d)

Pando Tree

64.

What is the most common tree on the world?

(a)  

65.

Who Invented the Light Bulb?

a)

Thomas Edison

b)

Joseph Swan

c)

Alexander Lodygin

d)

Mathew Evans

66.

What is COP?

a)

College Of engineering Pune

b)

Community Of Pollution control

c)

Communities Of Practices

d)

Conference Of the Parties

67.

Who is known as 'Tree Man of India'?

a)

Rajendra Singh

b)

Jadav Payeng

c)

Marimuthu Yoganathan

d)

S. P. Godrej

68.

In which year the term ‘Sustainable Development’ came into existence?

a)

1980

b)

1969

c)

2003

d)

1995

69.

What is full form of CPCB?

a)

Central Population Control Board

b)

Chandigarh Pollution Control Board

c)

Central Pollution Control Board

d)

Chandigarh Population Control Board

70.

What is sustainable development?

a)

Balancing the need to use resources and also conserve them for the future

b)

Development for the growth of economy

c)

Relationship between human and environment

d)

Using resources in speedy manner

71.

COP27 was held in which country?

a)

France

b)

England

c)

China

d)

Egypt

72.

What are the 3P's of sustainability?

a)

People, Planet, Profit

b)

People, Planet, Pollution

c)

Product, Process, Production

d)

People, Pollution, Prosperity

73.

What did you understand by the word 'multidisciplinary'?

a)

To follow multiple good disciplines

b)

Combining several academic disciplines

c)

Combining several democratic disciplines

d)

Following multiple paths or directions

74.

Dr. M.S. Swaminathan played a leading role for which revolution?

a)

White revolution

b)

Golden revolution

c)

Green revolution

d)

Industrial revolution

75.

Environmental studies is defined as the branch that deals with the:

a)

Design,study, and discovery of new materials

b)

The study of humanities, social,biological, and physical sciences

c)

Incorporate the information and physical sciences

d)

Approach about the natural world and the imapct of humans on its integrity

76.
What does the cell membrane do?
a)
controls activities of cell
b)
releases energy
c)
stores food, water, and waste
d)
controls movement in and out of cell
77.
What is the function of the nucleus?
a)
store food, water, and waste
b)
control cell activities
c)
take in energy from the sun
d)
give the cell shape
78.
Which type of cell is not eukaryotic?
a)
plant
b)
animal
c)
bacteria 
d)
they all are
79.

Which 3 organelles are found in plant cells but not in animal cells?

a)

Mitochondria, Ribosomes, Chloroplasts

b)

Chloroplasts, Vacuole, Cell wall

c)

Cell membrane, Chloroplasts, ribosomes

d)

Vacuole, Cell wall, mitochondria

80.

Elements

a)

are made of two or more types of atoms chemically bonded together

b)

are made of one type of atom

c)

are made of two or more types of molecules combined in the same space

d)

are always individual atoms

81.

Compounds

a)

are made of two or more types of atoms chemically bonded together

b)

are made of one type of atom

c)

are found on the periodic table

d)

can be separated into their individual parts through physical means

82.

Mixtures

a)

are made of two different types of atoms chemically bonded together

b)

Are only liquids

c)

Cannot be separated

d)

Can be separated using physical properties

83.

Which of the following are examples of Compounds?

a)

Salt

b)

Salt Water

c)

N2 + O2

d)

C6H12O6

e)

Co

84.

The subscript 2 in H2O tells us

a)

There are 2 atoms of oxygen in one molecule of water

b)

There are 2 atoms of hydrogen in one molecule of water

c)

There are 2 molecules of water present

d)

The 2 tells me nothing, you wizard!

85.

Is salt (NaCI) a compound or an element?

a)

Compound

b)

element

86.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
87.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
88.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
89.
An _______ force must act on an object for it to CHANGE it's motion
a)
balanced
b)
unbalanced
c)
gravitational
d)
electrical
90.
The unit of force is
a)
m/s
b)
m/s^2
c)
newton
d)
kg
91.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
92.

The formula for Speed is...

a)

Speed = distance/ time

b)

Speed = time/ distance

93.

If Harry drives 4 miles in 2 minutes, what was his speed?

a)

0.5 miles/min

b)

2 miles/min

c)

2 min/m

d)

0.5 min/m

94.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
95.
What is the anticlockwise moment acting on this crane?
a)
80,000Nm
b)
100,000Nm
c)
120,000Nm
d)
140,000Nm
96.

What’s ‘C’ in the diagram

a)

Mouth

b)

Nose

c)

Bronchus

d)

Throat

97.

Name the structure labeled 8

a)

lungs

b)

trachea

c)

diaphragm

d)

alveoli

98.
Identify
a)
Left atrium
b)
Right atrium
c)
Left ventricle
d)
Right ventricle
99.
What is structure A?
a)
Substrate
b)
Active site
c)
Enzyme
d)
Products
100.
What is structure D?
a)
Substrate
b)
Active site
c)
Enzyme
d)
Products
101.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
102.

What happens when enzymes are heated to a high temperature?

a)

The enzymes die

b)

The shape of the enzyme changes as it denatures

c)

The enzymes become more active

d)

The enzymes remain the same

103.
Balance this equation:
MgCl2 --> Mg4+ Cl2
a)
It's already balanced.
b)
4MgCl2 --> Mg4+ 4Cl2
c)
4MgCl2 --> Mg4+ 5Cl2
104.
The substances listed on the left side of a chemical equation are the
a)
Products
b)
Coefficients
c)
Precipitates
d)
Reactants
105.
In chemical reactions, what does the principle of conservation of mass mean?
a)
Matter is not created or destroyed.
b)
The total mass of the reactants is greater than the total mass of the products.
c)
The total mass of the reactants is less than the total mass of the products.
d)
Matter is not changed.
106.
How many Hydrogen (H) atoms are in NH3O5
a)
3
b)
4
c)
5
d)
1
107.
How many phosphorus atoms are in PO4?
a)
1
b)
2
c)
3
d)
4
108.
Which number should go in the blank?
_ H2 + O2 -> 2 H2O
a)
1
b)
2
c)
3
d)
0
109.
What kind of circuit is this?
a)
series
b)
parallel
110.
This is the symbol for a _____?
a)
switch
b)
light 
c)
battery
d)
wires
111.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
112.
The bending of waves as they pass from one substance into another.
a)
Reaction
b)
Reflection
c)
Refraction
d)
Repost
113.

Which term is used to describe height of a wave?

a)

amplitude

b)

wavelength

c)

peak

d)

trough

114.

Which wave has the highest pitch?

a)

A

b)

B

c)

C

d)

D

115.

The arrows in the picture below show several ways heat is transferred from the Sun as it strikes sand on the surface of a beach. Which arrow shows convection?

a)

1

b)

2

c)

3

d)

4

116.

If you walk barefoot on hot asphalt, energy is transferred by which process?

a)

Convection

b)

Radiation

c)

Conduction

d)

Reflection

117.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
118.
Particles of a liquid
a)
are tightly packed together and stay in a fixed position.
b)
have no viscosity.
c)
decrease in volume with increasing temperature.
d)
are free to move around one another but still touch.
119.
Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration
a)
High, low
b)
Low, high
c)
Low, low,
d)
High, high
120.
Where will the water go?
a)
Into the cell
b)
Out of the cell
c)
Equally in & out - it's isotonic
d)
There is no water
121.
Sodium
a)
S
b)

So

c)
Na
d)
Au
122.
The alkali metals are in group 1, on the far left of the periodic table. Which of these is NOT an alkali metal?
a)
Lithium
b)
Iron
c)
Potassium
d)
Francium
123.
What gas is always produced when a metal reacts with water?
a)
Oxygen
b)
Carbon Dioxide
c)
Hydrogen
d)
Carbon Monoxide
124.

When a metal salt reacts with a more reactive metal, what sort of reaction occurs?

a)

Displacement

b)

Neutralisation

c)

Combustion

d)

No Reaction

125.

Magnesium chloride + Sodium → ?

a)

Sodium chloride + Magnesium

b)

Magnesium chloride + Sodium (No change)

c)

Sodium magnesium + Chlorine

126.
Hooke's Law fails when a material reaches its:
a)
breakdown
b)
elastic limit
c)
end of tether
d)
fracture stress
127.
If F is force, k is spring constant and x is extension, Hooke's Law tells us that:
a)
F=k/x
b)
x=Fk
c)
k=Fx
d)
F=kx
128.

5 kJ is the same as

a)

0.005 W

b)

5000 J

c)

0.005 J

d)

5000000 J

129.

A car transfers 100 J of chemical energy in order to gain 50 J of kinetic energy. The efficiency of the car is

a)

20%

b)

0.5%

c)

50%

d)

200%

130.

Which of the following is a summary of Newton's SECOND law?

a)

An object in motion tends to stay in motion

b)

Force = Mass x Acceleration

c)

Every action has an equal and opposite reaction

d)

An object at rest tends to stay at rest

131.

Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue.

The substance in the beaker

a)

is a base

b)

is an acid

c)

have neutral pH

d)

doesn't have pH

132.

The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?

a)

3

b)

7

c)

9

d)

5

133.

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?

a)

strongly acidic

b)

slightly acidic

c)

strongly basic

d)

slightly basic

134.

Pure water has a pH of 7. Pure water _______.

a)

is a base

b)

is a neutral substance

c)

could be either an acid or a base

d)

is an acid

135.

A sour taste is a characteristic of:

a)

acid

b)

base

c)

neutral

d)

pH scale

136.

If a solution is basic which ion will be more present?

a)

H+

b)

K+

c)

OH-

d)

H-

137.

Stronger acids have a pH closer to...

a)

7

b)

14

c)

0

d)

9

138.

The pH scale is a range from:

a)

1-7

b)

1-5

c)

0-14

d)

1-14

139.

You test a solution with pH paper, and the paper turns red. The solution is ______.

a)

neutral

b)

an acid

c)

a base

d)

an acid & a base

140.
Distance and direction of an object's change in position from a starting point
a)
displacement
b)
distance
c)
motion
d)
reference point
141.

A deer is running 15 meters per second due west (westward)...

Is this an example of a vector or scalar?

a)
Scalar
b)
Vector
142.
A quantity that has both magnitude and direction is called a scalar quantity.
a)
True
b)
False
143.

What is the standard international (SI) unit for time?

a)

minutes

b)

seconds

c)

days

d)

hours

144.

What is the standard international (SI) unit for temperature?

a)

Kelvin (K)

b)

Fahrenheit (F)

c)

Celsius (C)

d)

Kryptonite (Ky)

145.

What is the standard international (SI) unit for distance?

a)

meters (m)

b)

feet (ft)

c)

kilometers (km)

d)

miles (mi)

146.

Which of the following is an example of a COMPOUND, NOT an element...

a)

Hydrochloric Acid (HCl)

b)

Carbon (C)

c)

Oxygen (O)

d)

Nitrogen (N)

147.

Which of the following is an example of a contact force?

a)

friction

b)

gravity

c)

electricity

d)

magnetism

148.

What is the standard international (SI) unit for force?

a)

Newton (N)

b)

Joule (J)

c)

Hertz (Hz)

d)

Watt (W)

149.
This bullseye demonstrates...
a)

High Accuracy & High Precision

(Little/no error)

b)

High Accuracy & Low Precision

(Machine error)

c)

Low Accuracy & High Precision

(Human error)

d)

Low Accuracy & Low Precision

(Both machine and human error)

150.

This bullseye demonstrates...

a)

High Accuracy & High Precision

(Little/no error)

b)

High Accuracy & Low Precision

(Machine Error)

c)

Low Accuracy & High Precision

(Human Error)

d)

Low Accuracy & Low Precision

(Both human and machine error)

151.

It is a measure of how close measurements come to each other when they are made in the same way ("closeness")

a)
Accuracy
b)
Precision
c)
Error
d)
Extrapolation
152.

How close a measurement is to the accepted value (correctness) is called..

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

153.

True or False... Percent Error measures accuracy and error range measures precision...

a)

True

b)

False

154.

Which of the following is NOT a branch of physics?

a)

Mechanics (the study of motion)

b)

Thermodynamics (the study of temperature)

c)

Electromagnetism (the study of electricity)

d)

Ecology (the study of the environment)

155.

Which of the following kinds of acids is found in oranges?

a)

citric acid

b)

lactic acid

c)

acetic acid

d)

phosphoric acid

156.

Which of the following kinds of acids is found in carbonated soda?

a)

citric acid

b)

lactic acid

c)

acetic acid

d)

phosphoric acid

157.

Which of the following kinds of acids is found in milk?

a)

citric acid

b)

lactic acid

c)

acetic acid

d)

phosphoric acid

158.

Which of the following kinds of acids is found in vinegaar?

a)

citric acid

b)

lactic acid

c)

acetic acid

d)

phosphoric acid

159.

Which of the following kinds of acids is NOT a base?

a)

soap

b)

ammonia

c)

sodium hydroxide (NaOH)

d)

phosphoric acid

160.

Which of the following is the name for the variable that the scientist changes in an experiment?

a)

the independent variable

b)

the dependent variable

c)

the controlled variable

d)

the hypothesis

161.

In an experiment where a scientist is trying to see how adding vitamins into dog food affects the weight of dogs, the weight of dogs would be...

a)

the independent variable

b)

the dependent variable

c)

the controlled variable

d)

the hypothesis

162.

True or False... Electrons are about a thousand times SMALLER than protons and have a NEGATIVE charge...

a)

True

b)

False

163.

What two kinds of particles are located in the nucleus (center) of the atom?

a)

electrons and protons

b)

electrons and neutrons

c)

protons and neutrons

d)

electrons and protons

164.

What is the net force?

a)

3 N

b)

3 N, right

c)

17 N, right

d)

3 N, left

165.

A ____________ is a push or a pull on an object.

a)

friction

b)

force

c)

magnet

d)

gravity

166.
If these teams are pulling with the same amount of force what will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
167.

True or False... Qualitative Data deals with NUMBERS/DATA whereas quantitative data deals with WORDS/DESCRIPTIONS

a)

True

b)

False

168.

Which of the following is the chemical symbol for Gold?

a)

Au

b)

Ag

169.

True or False...In a chemical change, a new substance is formed, whereas in a physical change, no new substance is formed...

a)

True

b)

False

170.

what is this garmet seson

a)

ordaniary time

b)

advent

c)

funeral

d)

lent

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