What happens when you mix vinegar and baking soda?
a) It forms a solid
b) It produces a foul odor
c) It creates a chemical reaction
d) It turns into a liquid
Answer: c) It creates a chemical reaction
Which gas is produced when plants undergo photosynthesis?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: a) Oxygen
What is the process called when a solid turns directly into a gas without becoming a liquid first?
a) Condensation
b) Sublimation
c) Evaporation
d) Fusion
Answer: b) Sublimation
Which of the following is a renewable energy source?
a) Coal
b) Natural gas
c) Solar power
d) Nuclear power
Answer: c) Solar power
What is the smallest unit of matter?
a) Atom
b) Molecule
c) Cell
d) Element
Answer: a) Atom
What happens to the mass of an object when it is submerged in water?
a) The mass increases
b) The mass decreases
c) The mass remains the same
d) The mass becomes zero
Answer: c) The mass remains the same
Which metal is liquid at room temperature?
a) Iron
b) Copper
c) Aluminum
d) Mercury
Answer: d) Mercury
Which color of light has the longest wavelength?
a) Red
b) Blue
c) Green
d) Yellow
Answer: a) Red
Which type of energy is stored in a stretched rubber band?
a) Thermal energy
b) Electrical energy
c) Potential energy
d) Kinetic energy
Answer: c) Potential energy
What is the chemical symbol for gold?
a) Go
b) Au
c) Ag
d) Gd
Answer: b) Au
Which gas makes up the majority of Earth’s atmosphere?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: b) Nitrogen
What is the process of changing a liquid into a gas called?
a) Melting
b) Freezing
c) Condensation
d) Boiling
Answer: d) Boiling
Which organ is responsible for pumping blood throughout the body?
a) Liver
b) Brain
c) Heart
d) Kidney
Answer: c) Heart
What happens to the boiling point of water at higher altitudes?
a) It decreases
b) It increases
c) It remains the same
d) It becomes unpredictable
Answer: a) It decreases
What is the chemical formula for water?
a) H2O2
b) CO2
c) H2SO4
d) H2O
Answer: d) H2O
What is the process called when a gas turns into a liquid?
a) Melting
b) Freezing
c) Evaporation
d) Condensation
Answer: d) Condensation
What is the SI unit of electric current?
a) Ampere
b) Watt
c) Ohm
d) Volt
Answer: a) Ampere
What is the largest planet in our solar system?
a) Mars
b) Venus
c) Jupiter
d) Saturn
Answer: c) Jupiter
Which type of rock is formed from cooled lava?
a) Sedimentary rock
b) Metamorphic rock
c) Igneous rock
d) Fossil rock
Answer: c) Igneous rock
What is the unit of measurement for force?
a) Kilogram
b) Meter
c) Newton
d) Watt
Answer: c) Newton
Which of the following is an example of a chemical change?
a) Melting ice
b) Cutting paper
c) Burning wood
d) Dissolving salt in water
Answer: c) Burning wood
What is the primary function of the ozone layer?
a) Regulating the Earth’s temperature
b) Filtering harmful UV radiation
c) Producing oxygen for plants
d) Preventing earthquakes
Answer: b) Filtering harmful UV radiation
What is the study of fossils called?
a) Paleontology
b) Botany
c) Genetics
d) Microbiology
Answer: a) Paleontology
Which of the following is an example of a conductor of electricity?
a) Rubber
b) Glass
c) Plastic
d) Copper
Answer: d) Copper
What is the process called when plants release water vapor through their leaves?
a) Photosynthesis
b) Transpiration
c) Respiration
d) Evaporation
Answer: b) Transpiration
What is the term for the process by which plants make their own food?
a) Respiration
b) Digestion
c) Photosynthesis
d) Absorption
Answer: c) Photosynthesis
Which of the following is not a primary color of light?
a) Red
b) Green
c) Blue
d) Yellow
Answer: d) Yellow
Which of the following is the largest organ in the human body?
a) Liver
b) Skin
c) Heart
d) Brain
Answer: b) Skin
What is the formula for calculating density?
a) Density = Mass × Volume
b) Density = Force × Distance
c) Density = Velocity × Time
d) Density = Work ÷ Power
Answer: a) Density = Mass × Volume
Which of the following is a greenhouse gas?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: c) Carbon dioxide
What is the process called when a liquid turns into a solid?
a) Melting
b) Freezing
c) Evaporation
d) Condensation
Answer: b) Freezing
What is the speed of light in a vacuum?
a) 300,000 km/s
b) 30,000 km/h
c) 3,000 km/s
d) 300 km/h
Answer: a) 300,000 km/s
What is the chemical symbol for sodium?
a) S
b) Na
c) So
d) N
Answer: b) Na
Which of the following is a mammal?
a) Crocodile
b) Shark
c) Eagle
d) Elephant
Answer: d) Elephant
Which planet is known as the “Red Planet”?
a) Mars
b) Venus
c) Jupiter
d) Saturn
Answer: a) Mars
What is the force that pulls objects towards the center of the Earth?
a) Gravity
b) Friction
c) Magnetism
d) Inertia
Answer: a) Gravity
What is the process of converting sunlight into electrical energy using photovoltaic cells called?
a) Geothermal energy
b) Wind energy
c) Solar energy
d) Hydroelectric energy
Answer: c) Solar energy
Which of the following is an example of a simple machine?
a) Pencil
b) Scissors
c) Bicycle
d) Smartphone
Answer: b) Scissors
What is the study of the Earth’s physical structure and history called?
a) Geography
b) Geology
c) Astronomy
d) Meteorology
Answer: b) Geology
Which of the following is not a phase of matter?
a) Solid
b) Liquid
c) Gas
d) Energy
Answer: d) Energy
What is the process of converting a solid directly into a gas called?
a) Melting
b) Sublimation
c) Evaporation
d) Condensation
Answer: b) Sublimation
What is the SI unit of pressure?
a) Newton
b) Pascal
c) Joule
d) Kilogram
Answer: b) Pascal
Which of the following is the largest ocean on Earth?
a) Atlantic Ocean
b) Indian Ocean
c) Arctic Ocean
d) Pacific Ocean
Answer: d) Pacific Ocean
What is the process of converting a gas directly into a solid called?
a) Melting
b) Sublimation
c) Evaporation
d) Condensation
Answer: b) Sublimation
What is the primary source of energy for the Sun?
a) Nuclear fusion
b) Chemical reactions
c) Thermal energy
d) Electrical energy
Answer: a) Nuclear fusion
What is the process called when a gas turns directly into a solid without becoming a liquid first?
a) Condensation
b) Sublimation
c) Evaporation
d) Fusion
Answer: b) Sublimation
Which of the following is not a type of electromagnetic radiation?
a) Radio waves
b) X-rays
c) Sound waves
d) Gamma rays
Answer: c) Sound waves
What is the chemical symbol for iron?
a) I
b) Fe
c) Ir
d) In
Answer: b) Fe
Which of the following is not a primary color of pigment?
a) Red
b) Green
c) Blue
d) Yellow
Answer: d) Yellow
What is the process called when a liquid turns directly into a gas without becoming a solid first?
a) Melting
b) Sublimation
c) Evaporation
d) Condensation
Answer: c) Evaporation
Which of the following is a renewable resource?
a) Oil
b) Coal
c) Natural gas
d) Wind
Answer: d) Wind
What is the study of the relationship between living organisms and their environment called?
a) Ecology
b) Biology
c) Zoology
d) Botany
Answer: a) Ecology
Which of the following is the hardest natural substance on Earth?
a) Wood
b) Diamond
c) Glass
d) Plastic
Answer: b) Diamond
What is the process of converting a gas into a liquid called?
a) Melting
b) Freezing
c) Evaporation
d) Condensation
Answer: d) Condensation
Which of the following is an example of a renewable energy source?
a) Coal
b) Natural gas
c) Solar power
d) Nuclear power
Answer: c) Solar power
What is the process of converting a liquid into a gas called?
a) Melting
b) Freezing
c) Evaporation
d) Condensation
Answer: c) Evaporation
Which gas is responsible for the Earth’s ozone layer?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Ozone
Answer: d) Ozone
What is the process called when a solid turns directly into a gas without becoming a liquid first?
a) Condensation
b) Sublimation
c) Evaporation
d) Fusion
Answer: b) Sublimation
Which of the following is a non-renewable resource?
a) Wind
b) Solar power
c) Natural gas
d) Geothermal energy
Answer: c) Natural gas
What is the chemical formula for table salt?
a) H2O
b) NaCl
c) CO2
d) CaCl2
Answer: b) NaCl
Which of the following is the basic unit of life?
a) Cell
b) Atom
c) Molecule
d) Organ
Answer: a) Cell
What is the process called when a solid turns into a liquid?
a) Melting
b) Freezing
c) Evaporation
d) Condensation
Answer: a) Melting
Which of the following is the largest organ in the human body?
a) Liver
b) Skin
c) Heart
d) Brain
Answer: b) Skin
What is the SI unit of electric current?
a) Ampere
b) Watt
c) Ohm
d) Volt
Answer: a) Ampere
Which of the following is not a planet in our solar system?
a) Mars
b) Venus
c) Jupiter
d) Europa
Answer: d) Europa
What is the process called when a liquid turns into a solid?
a) Melting
b) Freezing
c) Evaporation
d) Condensation
Answer: b) Freezing
Which of the following is an example of a conductor of heat?
a) Plastic
b) Wood
c) Metal
d) Glass
Answer: c) Metal
What is the process called when a solid turns directly into a gas without becoming a liquid first?
a) Condensation
b) Sublimation
c) Evaporation
d) Fusion
Answer: b) Sublimation
Which gas is responsible for the green color in plants?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Chlorophyll
Answer: d) Chlorophyll
What is the process called when a liquid turns into a gas?
a) Melting
b) Freezing
c) Evaporation
d) Condensation
Answer: c) Evaporation
