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WorksheetsScience Quiz Bee Reviewer G8
Total questions: 50
Worksheet time: 25mins
Which of the following is a diatomic molecule?
NaCl
H2O
O2
NH3
What is the name of the process by which a solid turns directly into a gas?
Condensation
Evaporation
Sublimation
Deposition
What type of mixture is milk?
Solution
Suspension
Colloid
Compound
Which of the following is a strong acid?
Acetic acid
Citric acid
Hydrochloric acid
Carbonic acid
What is the chemical formula for rust?
(a)
Which gas is used in balloons because it is lighter than air?
Oxygen
Nitrogen
Carbon dioxide
Helium
What is the molar mass of carbon dioxide (CO2)?
28 g/mol
32 g/mol
44 g/mol
48 g/mol
Which of the following is a polymer?
Glucose
Fructose
Starch
Sucrose
What is the pH of a solution with a hydroxide ion concentration of (1×10−10)M ?
4
6
10
14
What volume of 2.0 M HCl is needed to neutralize 25.0 mL of 1.0 M NaOH?
10.0 mL
12.5 mL
25.0 mL
50.0 mL
Which of the following is an example of a heterogeneous mixture?
Saltwater
Air
Concrete
Vinegar
What is the SI unit of energy?
Watt
Newton
Joule
Pascal
Which type of energy is associated with the motion of objects?
Potential energy
Kinetic energy
Chemical energy
Thermal energy
What is the formula for calculating potential energy due to gravity?
PE=mv2
PE = mgh
21mv2
PE = Fd
What is the speed of sound in air at room temperature (approximately 20°C)?
300 m/s
330 m/s
343 m/s
360 m/s
Which of the following is a renewable energy source?
Coal
Oil
Natural gas
Wind
What is the relationship between frequency and wavelength of a wave?
Directly proportional
Inversely proportional
Independent
Exponential
Which of Newton's laws explains why a rocket moves forward when it expels gas backward?
First Law
Second Law
Third Law
Law of Gravitation
What is the term for the time it takes for one complete cycle of a wave to pass a point?
Frequency
Wavelength
Amplitude
Period
What is the principle behind the working of optical fibers?
Reflection
Refraction
Total internal reflection
Diffraction
What is the formula for calculating pressure?
Pressure = Force x Area
Pressure = Force / Area
Pressure = Area / Force
Pressure = 1 / (Force x Area)
The Doppler effect is:
the change in frequency or wavelength of a wave in relation to an observer moving relative to the source of the wave.
the bending of light as it passes through different mediums.
the splitting of white light into its component colors.
the reflection of sound waves from a surface.
What is the name of our galaxy?
Andromeda
Triangulum
Milky Way
Whirlpool
Which planet is known as the "Red Planet"?
Venus
Mars
Jupiter
Saturn
What is the largest planet in our solar system?
Earth
Mars
Saturn
Jupiter
Which gas makes up the majority of Earth's atmosphere?
(a)
What is the name of the phenomenon when the Moon passes between the Sun and Earth?
Lunar eclipse
Solar eclipse
Supermoon
Blue moon
Which type of rock is formed from cooled lava or magma?
Sedimentary
Metamorphic
Igneous
Organic
What is the name of the theory that explains the formation of the universe?
Steady State Theory
Big Bang Theory
Oscillation Theory
Nebular Hypothesis
Which layer of the atmosphere contains the ozone layer?
Troposphere
Stratosphere
Mesosphere
Thermosphere
What is the name of the process by which rocks are broken down into smaller pieces by physical means?
Chemical weathering
Biological weathering
Mechanical weathering
Erosion
What is the albedo effect?
The absorption of sunlight by the Earth's surface
The reflection of sunlight by the Earth's surface
The trapping of heat by greenhouse gases
The emission of heat from the Earth's core
What is the Coriolis effect?
The deflection of moving objects due to the Earth's rotation
The change in sea level due to the Moon's gravity
The formation of clouds due to evaporation
The movement of tectonic plates
What is the Kuiper Belt?
A region of the solar system beyond the orbit of Neptune containing many icy bodies
A layer of the Earth's atmosphere
A type of galaxy
A type of rock formation
What is the basic unit of heredity?
Cell
Tissue
Gene
Organ
Which organelle is responsible for protein synthesis?
Mitochondria
Nucleus
Ribosome
Golgi apparatus
What is the process by which plants convert light energy into chemical energy?
Respiration
Photosynthesis
Transpiration
Digestion
Which type of blood cell is responsible for carrying oxygen?
White blood cell
Red blood cell
Platelet
Plasma cell
What is the function of the nervous system?
To transport oxygen
To produce hormones
To control body movements and responses
Which of the following is a type of muscle tissue?
Epithelial tissue
Nervous tissue
Cardiac muscle
Connective tissue
What is the role of DNA in a cell?
To produce energy
To control cell activities
To store genetic information
To transport nutrients
What is the process of genetic information being passed from parents to offspring called?
Mutation
Evolution
Heredity
Adaptation
Which of the following is a characteristic of living organisms?
Ability to reproduce
Ability to move
Ability to think
Ability to fly
The central dogma of molecular biology is:
DNA is transcribed to RNA, which is translated to protein.
Proteins are transcribed to RNA, which is translated to DNA.
RNA is translated to DNA, which is transcribed to protein.
DNA is translated directly to protein without RNA.
Which of the following correctly represents the central dogma of molecular biology?
DNA → Protein → RNA
RNA → DNA → Protein
DNA → RNA → Protein
Protein → DNA → RNA
What is the function of the enzyme DNA polymerase?
To break down DNA
To synthesize DNA
To repair DNA
To transcribe DNA
What is the role of the immune system?
To transport oxygen
To produce hormones
To defend the body against pathogens
To digest food
What is the primary function of the ribosome in a cell?
To synthesize proteins
To produce energy
To store genetic information
To transport nutrients
What is the term for the amount of matter in an object?
Density
Mass
Volume
Weight
Which of the following is a characteristic of acids?
They are always gaseous
They feel slippery
They turn blue litmus paper red
They taste bitter
