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Science Final Review (a little long)- rahaf

Total questions: 107

Worksheet time: 2hrs 27mins

Name
Class
Date
1.

Which of the following is the first step of the scientific method?

a)

Ask a question

b)

Draw a conclusion

c)

Analyze data

d)

Make a graph

2.

What should a properly labeled graph include?

a)

Title, labeled axes, and increments

b)

Only a title

c)

Only labeled axes

d)

Only increments

3.

What are the rows in the periodic table called?

a)

Periods

b)

Groups

c)

Families

d)

Blocks

4.

Which of the following is a characteristic of Alkali Metals?

a)

Highly reactive

b)

Inert gases

c)

Poor conductors of electricity

d)

Found as diatomic molecules

5.

What is the main difference between groups and periods in the periodic table?

a)

Groups are columns, periods are rows

b)

Groups are rows, periods are columns

c)

Both are columns

d)

Both are rows

6.

Why is it important to use control variables in an experiment?

a)

To ensure results are due to the independent variable

b)

To make the experiment more complicated

c)

To change the outcome

d)

To ignore the dependent variable

7.

What is the main characteristic of noble gases?

a)

They are highly reactive.

b)

They are good conductors of electricity.

c)

They are generally unreactive.

d)

They are always solid at room temperature.

8.

Which state of matter has particles that are farthest apart?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

9.

What causes chemical bonds to form?

a)

Attraction between protons

b)

Attraction between electrons and nuclei

c)

Attraction between neutrons

d)

Attraction between atoms and molecules

10.

Where are valence electrons located in an atom?

a)

In the outermost shell

b)

In the nucleus

c)

In the innermost shell

d)

Between protons and neutrons

11.

What is the main difference between solids and liquids in terms of particle arrangement?

a)

Solids have closely packed particles, liquids have more spaced particles.

b)

Solids have loosely packed particles, liquids have tightly packed particles.

c)

Both have the same particle arrangement.

d)

Solids have particles that move freely, liquids do not.

12.

What is the main characteristic of noble gases?

a)

They are very unreactive.

b)

They are highly reactive.

c)

They are always solid at room temperature.

d)

They are magnetic.

13.

Which of the following is NOT a phase change involving thermal energy?

a)

Dissolving

b)

Melting

c)

Freezing

d)

Evaporation

14.

Which type of energy is related to the movement of particles?

a)

Kinetic Energy

b)

Potential Energy

c)

Chemical Energy

d)

Nuclear Energy

15.

Which of the following is a property of nonmetals?

a)

Poor conductor of electricity

b)

Shiny appearance

c)

Malleable

d)

Ductile

16.

What is the main difference between kinetic and potential energy?

a)

Kinetic energy is due to motion, potential energy is stored energy.

b)

Kinetic energy is stored, potential energy is due to motion.

c)

Both are the same.

d)

Kinetic energy is only found in solids.

17.

Which of the following is a property of gases?

a)

No definite shape or volume

b)

Definite shape and volume

c)

High density

d)

Particles are closely packed

18.

Which of the following is NOT a type of chemical reaction?

a)

Evaporation

b)

Synthesis

c)

Decomposition

d)

Combustion

19.

What is the main purpose of a chemical equation?

a)

To represent a chemical reaction

b)

To measure temperature

c)

To calculate speed

d)

To describe sound waves

20.

What is the definition of a reactant in a chemical equation?

a)

A substance that starts a chemical reaction

b)

A substance produced by a reaction

c)

A catalyst

d)

A type of energy

21.

What is activation energy?

a)

The minimum energy needed to start a reaction

b)

The energy released by a reaction

c)

The energy stored in products

d)

The energy of motion

22.

Which type of reaction involves a substance reacting with oxygen to produce energy, often as heat and light?

a)

Combustion

b)

Synthesis

c)

Decomposition

d)

Single replacement

23.

What does balancing a chemical equation ensure?

a)

The same number of atoms of each element on both sides

b)

The reaction is exothermic

c)

The products are gases

d)

The equation is written in English

24.

What is a product in a chemical reaction?

a)

A substance formed as a result of a chemical reaction

b)

A substance that starts a reaction

c)

A catalyst

d)

A type of energy

25.

Which of the following is a characteristic of endothermic reactions?

a)

They absorb energy

b)

They release energy

c)

They produce light

d)

They form gases

26.

Which of the following is a main part of an electric motor?

a)

Turbine

b)

Commutator

c)

Light bulb

d)

Battery

27.

What is the primary purpose of the scientific method?

a)

To publish scientific papers

b)

To solve complex mathematical problems

c)

To systematically investigate phenomena, acquire new knowledge, or correct and integrate previous knowledge

d)

To argue about scientific theories

28.

Sodium (Na) is found in which period?

a)

1

b)

2

c)

3

d)

4

29.

Which element is in GROUP 15 and PERIOD 2?

a)

Phosphorus

b)

Potassium

c)

Arsenic

d)

Vanadium

30.

The particle diagrams represent a substance at different states of matter. Select the response that correctly identifies each arrangement in order.

a)

Liquid, Solid, Gas

b)

Gas, Liquid, Solid

c)

Solid, Gas, Liquid

d)

Solid, Liquid, Gas

31.

What is the reactivity of this atom?

a)

nonreactive

b)

highly reactive

32.

Is this element reactive or non reactive?

a)

Reactive

b)

Nonreactive

33.

Which state of matter are the particles in this animation?

a)

Solid

b)

LIquid

c)

Gas

d)

Plasma

34.

Which state of matter are the particles in this animation?

a)

Solid

b)

LIquid

c)

Gas

d)

Plasma

35.

What are valence electrons?

a)
Valence electrons are the protons in the nucleus of an atom.
b)
Valence electrons are the electrons that are always paired in an atom.
c)
Valence electrons are the electrons that do not participate in bonding.
d)
Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.
36.

What are the 2 types of solids?

a)
Liquid solids and gaseous solids
b)
Organic solids and inorganic solids
c)
Metallic solids and polymeric solids
d)
Crystalline solids and amorphous solids
37.

Difference between crystalline and amorphous solids.

a)
Crystalline solids are always liquid at room temperature.
b)
Amorphous solids have a regular structure and sharp melting points.
c)
Crystalline solids have a regular structure and sharp melting points, while amorphous solids have irregular structures and no sharp melting points.
d)
Crystalline solids do not conduct electricity, while amorphous solids do.
38.

What is viscosity?

a)
Viscosity is the measure of a fluid's resistance to flow.
b)
Viscosity is the density of a fluid.
c)
Viscosity is the temperature at which a fluid boils.
d)
Viscosity is the speed of sound in a fluid.
39.

What is surface tension

a)
Surface tension is the elastic-like force existing at the surface of a liquid.
b)
The speed at which a liquid flows.
c)
The weight of a liquid per unit volume.
d)
A measure of a liquid's temperature.
40.

What is thermal energy

a)
Thermal energy is the energy produced by electrical currents.
b)
Thermal energy is the energy stored in chemical bonds.
c)
Thermal energy is the total kinetic energy of particles in a substance.
d)
Thermal energy is the energy associated with gravitational forces.
41.

What is temperature?

a)
Temperature is a measure of heat.
b)
Temperature is the amount of light in a room.
c)
Temperature measures the speed of sound.
d)
Temperature is a type of energy.
42.

sublimation

a)
Sublimation refers to the mixing of solid and gas states.
b)
Sublimation is the transition of a substance from gas to liquid.
c)
Sublimation is the process of a substance changing from liquid to solid.
d)
Sublimation is the transition of a substance from solid to gas.
43.

deposition

a)
Deposition is the process of liquid turning into gas.
b)
Deposition is the process of solid turning into liquid.
c)
Deposition is the process of solid turning into gas.
d)
Deposition is the process of gas turning into solid.
44.

What is the relationship between pressure and volume?

a)
Pressure and volume are unrelated.
b)
Pressure is inversely proportional to volume.
c)
Pressure is directly proportional to volume.
d)
Increasing volume increases pressure.
45.

Types of chemical reactions

a)
Synthesis, Decomposition, Single Replacement, Double Replacement, Combustion
b)
Electrolysis
c)
Hydrolysis
d)
Neutralization
46.

What is decomposition in a chemical reaction

a)
Decomposition is a type of reaction that produces energy without breaking down compounds.
b)
Decomposition is when two compounds combine to form one product.
c)
Decomposition is a process that occurs only in living organisms.
d)
Decomposition is a type of chemical reaction where one compound breaks down into two or more products.
47.

Difference between double and single replacement

a)
Double replacement involves one compound breaking apart, while single replacement involves two compounds combining.
b)
Double replacement involves two compounds exchanging ions, while single replacement involves one element replacing another in a compound.
c)
Single replacement occurs only in ionic compounds, while double replacement can occur in covalent compounds.
d)
Double replacement reactions always produce a gas, while single replacement reactions do not.
48.

difference between a catalyst and inhibitor

a)
A catalyst is a substance that remains unchanged; an inhibitor is consumed in the reaction.
b)
A catalyst slows down reactions; an inhibitor speeds them up.
c)
A catalyst speeds up reactions; an inhibitor slows them down.
d)
A catalyst and an inhibitor both speed up reactions but to different extents.
49.

What is conduction?

a)
Conduction is the transfer of heat or electricity through a material without the movement of the material.
b)
Conduction is the process of converting electrical energy into heat energy.
c)
Conduction occurs only in gases and liquids.
d)
Conduction is the movement of materials to transfer heat.
50.

what is convection?

a)
Convection is the movement of air in a vacuum.
b)
Convection refers to the transfer of heat through direct contact.
c)
Convection is the process of solidifying materials.
d)
Convection is the transfer of heat through the movement of fluids.
51.

Name the types of friction

a)

Rolling

b)

static

c)

fluid

d)

sliding

e)

air

52.

Difference between contact and non contact forces

a)
Contact forces involve direct interaction; non-contact forces operate at a distance.
b)
Contact forces are always stronger than non-contact forces regardless of distance.
c)
Non-contact forces require physical contact to act; contact forces do not need any interaction.
d)
Contact forces can only be felt through touch; non-contact forces cannot be felt at all.
53.

Difference between mass and weight

a)
Mass is the amount of matter; weight is the force of gravity on that mass.
b)
Weight is the amount of matter; mass is the force of gravity on that matter.
c)
Mass and weight are the same thing; they can be used interchangeably.
d)
Mass is the weight of an object; weight is the mass of an object.
54.

What is Newton’s first law?

a)
An object will remain in motion only if it is in a vacuum.
b)
An object will change direction only when a force is applied.
c)
An object will remain at rest or in uniform motion unless acted upon by an external force.
d)
An object will accelerate unless a force is applied.
55.

What is Newton’s second law in words?

a)
The acceleration of an object is directly proportional to the distance it travels.
b)
The force acting on an object is equal to its mass times its acceleration (F = ma).
c)
The mass of an object is equal to the force applied divided by its velocity.
d)
An object in motion stays in motion unless acted upon by an outside force.
56.

What is newtons 3rd law?

a)
Every action has no reaction.
b)
For every action, there is a greater reaction.
c)
For every action, there is an equal and opposite reaction.
d)
For every action, there is a similar reaction.
57.

Difference between balanced and unbalanced forces

a)
Balanced forces always move objects faster.
b)
Unbalanced forces can only act on stationary objects.
c)
Balanced forces create friction between surfaces.
d)
Balanced forces do not change an object's motion, while unbalanced forces cause acceleration.
58.

What is net force?

a)
Net force is the total force acting on an object, taking into account all individual forces.
b)
Net force is the weight of an object divided by its mass.
c)
Net force is the speed of an object in motion.
d)
Net force is the sum of all forces acting on an object in one direction.
59.

what is speed?

a)
Speed is the rate at which an object covers distance.
b)
Speed is the temperature of an object.
c)
Speed is the force applied to an object.
d)
Speed is the amount of time taken to travel a distance.
60.

What is velocity?

a)
Velocity only refers to the speed of an object.
b)
Velocity is the same as speed.
c)
Velocity is a vector quantity that describes the speed and direction of an object's motion.
d)
Velocity is a scalar quantity that does not include direction.
61.

what is acceleration?

a)
Acceleration is the distance traveled over time.
b)
Acceleration is the speed of an object at a given moment.
c)
Acceleration is the force applied to an object.
d)
Acceleration is defined as the change in velocity per unit time.
62.

difference between vector and scalar quantities

a)
Vectors have magnitude and direction; scalars have only magnitude.
b)
Scalars can have direction but no magnitude.
c)
Both vectors and scalars have only direction.
d)
Vectors have only magnitude; scalars have magnitude and direction.
63.

What are the 6 forms of energy?

a)
mechanical, thermal, chemical, electrical, nuclear, radiant
b)
biological, geothermal, solar, wind, hydro, fossil
c)
static, dynamic, thermal, chemical, radiant, mechanical
d)
gravitational, kinetic, potential, sound, magnetic, elastic
64.

What are the 3 types of potential energy?

a)
Nuclear potential energy
b)
Gravitational potential energy, elastic potential energy, chemical potential energy
c)
Thermal potential energy
d)
Magnetic potential energy
65.

Definition of a wave.

a)
A wave is a fixed point in space that does not move.
b)
A wave is a type of particle that cannot transfer energy.
c)
A wave is a disturbance that travels through space and matter, transferring energy.
d)
A wave is a static disturbance that only occurs in solids.
66.

Waves transfer matter, not energy

a)
True
b)
False
67.

Difference between transfer and longitudinal waves

a)
Transfer waves have parallel particle motion, while longitudinal waves have perpendicular particle motion.
b)
Transfer waves travel faster than longitudinal waves in all mediums.
c)
Transfer waves have perpendicular particle motion, while longitudinal waves have parallel particle motion.
d)
Longitudinal waves can only travel through solids, while transfer waves can travel through all states of matter.
68.

What are electromagnetic waves

a)
Electromagnetic waves are waves of electric and magnetic fields that travel through space.
b)
Waves that are only produced by sound
c)
Waves that travel only through water
d)
Waves that only consist of electric fields
69.
What is an example of a wave with a long wavelength and low frequency?
a)
Gamma rays
b)
Infrared
c)
Radio
d)
Visible light
70.
An example of a wave with a short wavelength, high frequency, and high energy is a 
a)
X-ray
b)
Microwave
c)
Visible light wave
d)
Infrared wave
71.
What waves have the lowest energy? 
a)
Gamma rays
b)
Visible light waves
c)
Radio waves
d)
X rays
72.

The electromagnetic spectrum is made up of bands of waves with different _____

a)

Speeds

b)

Frequencies

c)

Reflections

d)

Mediums

73.

All of the waves listed below are a part of the electromagnetic spectrum except

a)

X Rays

b)

Sound Waves

c)

Gamma Rays

d)

Light Waves

74.

Electromagnetic waves come in many different wavelengths. Shorter wavelengths carry more energy and penetrate further through materials. People wear sunblock to prevent UV waves from damaging their skin cells. Which kind of wave has enough energy to pass through skin and damage cells on the inside of the body?

a)

Visible Light

b)

Infrared

c)

Gamma Rays

d)

Radio Waves

75.

Electromagnetic radiation is energy that travels in waves. Two types of electromagnetic waves are microwaves and gamma rays. Gamma rays have a shorter wavelength than microwaves. Which of these statements is true?

a)

Gamma rays travel faster than microwaves in a vacuum.

b)

Gamma rays have more energy than microwaves do.

c)

Gamma rays have a lower frequency than microwaves do.

d)

Gamma rays, but not microwaves, can travel through a vacuum.

76.
Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy
a)
Radio waves
b)
Ultraviolet Rays
c)
Gamma Rays
d)
X-rays
77.
Which section of the spectrum is the ONLY one we can see?
a)
X-rays
b)
Visible Light
c)
Gamma Rays
d)
Ultraviolet Rays
78.
How are electromagnetic waves different from other waves? 
a)
They have very short wavelengths 
b)
They transmit energy instead of matter 
c)
They can travel through empty space
d)
They can change direction by reflection 
79.
The height of the wave from the rest position is known as the _____________.
a)
amplitude
b)
crest
c)
trough
d)
wavelength
80.

What kind if waves do phones use?

a)

Microwaves

b)

Infrared waves

c)

Radio waves

d)

X-rays

81.

What type of waves does TVs and broadcast radios use

a)

radio waves

b)

microwaves

c)

infrared waves

d)

gamma rays

82.

Remote controls

a)

radio waves

b)

infrared waves

c)

microwaves

d)

ultraviolet waves

83.

polarization meaning

a)
The process of restricting waves to oscillate in particular directions or the division of a group into opposing factions.
b)
The act of combining different colors into one.
c)
A method of increasing temperature in a substance.
d)
The ability to amplify sound waves in all directions.
84.

difference between insulator and conductor

a)
Insulators allow electric current to flow freely.
b)
Conductors are used to store electric charge.
c)
Insulators are always made of metal.
d)
Conductors facilitate electric current flow; insulators impede it.
85.

What are the 3 ways to transfer electric Charges?

a)
Magnetism
b)
Conduction, Induction, Polarization
c)
Convection
d)
Radiation
86.

Grounding meaning in science

a)
Grounding in science is the act of isolating electrical circuits from the earth.
b)
Grounding in science refers to the process of measuring electrical resistance.
c)
Grounding in science is the process of connecting an electrical circuit to the earth for safety.
d)
Grounding is a method used to enhance the speed of electrical circuits.
87.

Why does the following circuit not work?

a)

The light bulb is broken

b)

The switch is closed

c)

The wood block is an insulator

d)

The battery is dead

88.

Does energy flow through an open or closed switch?

a)

open switch

b)

closed switch

c)

both open and closed

d)

neither

89.

What is a circuit with several paths for electricity to flow?

a)

conductor

b)

series circuit

c)

parallel circuit

d)

open circuit

90.

What is a circuit that only has ONE path for electricity to flow?

a)

series circuit

b)

closed circuit

c)

parallel circuit

d)

light bulb

91.

What unit is used to measure current?

a)

Ohms

b)

Omega

c)

Volts

d)

Amps

92.

What unit is used to measure resistance?

a)

Ohms

b)

Omega

c)

Volts

d)

Amps

93.

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

a)

1/4 A

b)

144 A

c)

4 A

d)

0.4 A

94.

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

a)

1/3 ohms

b)

3 ohms

c)

27 ohms

d)

9 ohms

95.

What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?

a)

12 V

b)

21 V

c)

4/3 V

d)

3/4 V

96.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
97.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
98.

Magnetism is a force of ____________________________ that occurs between two _____________ objects.

a)

attraction or repulsion, magnetic

b)

external or internal, magnetic

c)

external or repulsion, electronic

d)

attraction or internal, electronic

99.

The magnetic ____________ around a bar magnet is shown above.

a)

legs

b)

flowers

c)

field

d)

direction

100.

In magnetic materials, all of the ________ are pointing in the same direction.

a)

doors

b)

electrons

c)

domains

d)

orbits

101.

Some objects that normally aren't magnetic can become magnetized when connected to a circuit. Items that are magnetized in this way are called ________.

a)

electromagnets

b)

electrons

c)

electrochromic devices

d)

permanent magnets

102.

Probably the most useful thing about electromagnets is that they can be turned ________ and ________.

a)

on, off

b)

positive, negative

c)

north, south

d)

on, negative

103.

Although magnetic fields are _____________, one common way that people investigate them is to use ________ filings.

a)

invisible, iron

b)

touchable, iron

c)

invisible, plastic

d)

touchable, plastic

104.

Select all that apply. These are ferromagnetic substances:

a)

cobalt

b)

iron

c)

nickel

d)

water

e)

rare earth metals

105.

If a bar magnet is broken into two pieces,

a)

both pieces will also be magnets

b)

neither piece will be a magnet

c)

only the original north piece will be a magnet

d)

only the original south piece will be a magnet

106.

What is the purpose of a commutator in an electric motor?

a)

To cool down the motor

b)

To automatically switch the direction of current

c)

To increase the motor's power

d)

To reduce the motor's speed

107.

How does reversing the polarity of an electromagnet affect it?

a)

It loses its magnetic properties

b)

It becomes a permanent magnet

c)

North becomes south and vice versa

d)

It stops being a magnet

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