101 Easy Science Questions Every American Student Should Know
Test your knowledge with these 101 easy science questions every US student should know. Fun and educational quizzes for kids that cover biology, physics, chemistry and earth science!
Are you ready to test your knowledge about science? Science is all around us, from the food we eat to the air we breathe to the technology we use every day. Whether you’re a curious student or just looking for a fun challenge, this list of 101 easy science questions is perfect for anyone wanting to learn more about the world. Designed for USA students, these questions cover the basic topics of biology, physics, chemistry, and earth science. So, grab a pen and see how many you can answer correctly. Let us dive in together and explore the treasure trove of unique knowledge of science!
Easy Science Questions with Answer: Biology
What is the powerhouse of the cell?
Answer: MitochondriaWhich part of the plant is responsible for photosynthesis?
Answer: LeavesWhat gas do humans exhale?
Answer: Carbon dioxideWhich is the largest organ of the human body?
Answer: SkinWhat type of animal is a frog: amphibian or reptile?
Answer: AmphibianWhat is the process called by which plants make their own food?
Answer: PhotosynthesisHow many legs does an insect have?
Answer: SixWhat do you call a baby frog?
Answer: TadpoleWhat is the smallest unit of life?
Answer: CellWhat do bees collect from flowers?
Answer: NectarHow many bones are there in the adult human body?
Answer: 206What is the largest mammal on Earth?
Answer: Blue whaleWhat pigment gives plants their green color?
Answer: ChlorophyllWhat is the human body’s main source of energy?
Answer: CarbohydratesWhat animal is known for changing its color to camouflage?
Answer: ChameleonHow many chambers does the human heart have?
Answer: FourWhat is the fastest land animal?
Answer: CheetahWhich bird is known for its ability to imitate sounds including human language?
Answer: ParrotWhat part of the body is responsible for pumping blood?
Answer: HeartWhat animal lives both on land and in water?
Answer: Amphibian
Easy Science Questions with Answer: Chemistry
- What is the chemical symbol for water?
Answer: H₂O - What is the chemical symbol for oxygen?
Answer: O - What is the most abundant gas in Earth’s atmosphere?
Answer: Nitrogen - What is the pH level of pure water?
Answer: 7 (neutral) - Which element does “H” represent in the periodic table?
Answer: Hydrogen - What is the boiling point of water in Celsius?
Answer: 100°C - What is the atomic number of carbon?
Answer: 6 - Which is the most common element in the Universe?
Answer: Hydrogen - What gas do plants release during photosynthesis?
Answer: Oxygen - What is the chemical formula for table salt?
Answer: NaCl - What is the hardest natural substance on Earth?
Answer: Diamond - What is the state of substance of water at room temperature?
Answer: Liquid - What do you call a substance made of only one type of atom?
Answer: Element - What is the common name for sodium chloride?
Answer: Table salt - What does the term “H₂O” refer to?
Answer: Water - What is the simplest form of sugar?
Answer: Glucose - What element is known as the “building block of life”?
Answer: Carbon - What is the chemical symbol for gold?
Answer: Au - What is dry ice made of?
Answer: Carbon dioxide (solid form) - What element is necessary for combustion?
Answer: Oxygen
Easy Science Questions with Answer: Physics
What force keeps us on the ground?
Answer: GravityWhat is the speed of light?
Answer: 299,792 kilometers per second (in a vacuum)What is the unit of measure for electric current?
Answer: Ampere (Amp)Who is known as the father of modern physics?
Answer: Albert EinsteinWhat is the force that pulls objects toward the Earth?
Answer: GravityWhat is the unit of measure for energy?
Answer: JouleWhat type of energy does a moving object have?
Answer: Kinetic energyWhat does a thermometer measure?
Answer: TemperatureWhat is the basic unit of measure for mass?
Answer: KilogramWhat does a magnet attract?
Answer: Iron and other magnetic materialsWhat do you call the bending of light as it passes through water?
Answer: RefractionWhat type of energy comes from the sun?
Answer: Solar energyWhat simple machine is used to lift heavy objects with less effort?
Answer: LeverWhat do you call a push or pull on an object?
Answer: ForceWhat material can block electricity from flowing?
Answer: InsulatorWhat kind of energy is stored in a battery?
Answer: Chemical energyWhat happens when you mix red and blue light?
Answer: You get purple (violet) lightWhat travels faster: sound or light?
Answer: LightWhat is the basic unit of measure for temperature in the metric system?
Answer: CelsiusWhat does a prism do to light?
Answer: It separates light into a spectrum of colors
Easy Science Questions with Answer: Earth Science
What layer of Earth do we live on?
Answer: CrustWhat is the largest ocean on Earth?
Answer: Pacific OceanWhat do you call molten rock that erupts from a volcano?
Answer: LavaWhat is the study of weather called?
Answer: MeteorologyWhat is the name of our galaxy?
Answer: Milky WayWhat causes the tides in the ocean?
Answer: The gravitational pull of the MoonWhat is the process by which water changes from liquid to gas?
Answer: EvaporationWhat type of rock is formed from cooling lava?
Answer: Igneous rockWhat is the solid, outer layer of Earth called?
Answer: CrustWhat is the term for a scientist who studies fossils?
Answer: PaleontologistWhat natural disaster is caused by the sudden movement of Earth’s crust?
Answer: EarthquakeWhat is the name of the supercontinent that existed millions of years ago?
Answer: PangaeaWhat gas do volcanoes often release into the atmosphere?
Answer: Carbon dioxideWhat do we call a large body of ice that moves slowly over land?
Answer: GlacierWhat is the water cycle process where water falls from the sky as rain or snow?
Answer: PrecipitationWhat is Earth’s only natural satellite?
Answer: The MoonWhat is the most common gas in the Earth’s atmosphere?
Answer: NitrogenWhat do we call a sudden shaking of the ground caused by movement along a fault line?
Answer: EarthquakeWhat is the longest river in the United States?
Answer: Missouri RiverWhat is the name of the imaginary line that divides Earth into the Northern and Southern Hemispheres?
Answer: Equator
Easy Science Questions with Answer: Astronomy
- What is the closest planet to the Sun?
Answer: Mercury - How many planets are in our solar system?
Answer: Eight - What is the name of the second-largest planet in our solar system?
Answer: Saturn - What is Earth’s closest star?
Answer: The Sun - What planet is known as the Red Planet?
Answer: Mars - What do you call a group of stars that forms a pattern in the sky?
Answer: Constellation - What is the name of the galaxy we live in?
Answer: Milky Way - What is the smallest planet in our solar system?
Answer: Mercury - What planet is famous for its rings?
Answer: Saturn - What celestial body orbits the Earth?
Answer: The Moon - What is the name of the largest moon of Jupiter?
Answer: Ganymede - What is the study of the stars, planets, and space called?
Answer: Astronomy - What is the term for a rocky object that orbits the Sun?
Answer: Asteroid - What causes the phases of the moon?
Answer: The Moon’s position relative to the Earth and Sun - What planet is known for its Great Red Spot?
Answer: Jupiter - What do you call a star that suddenly becomes much brighter?
Answer: Nova - What is the term for a spacecraft without a crew?
Answer: Unmanned spacecraft - How long does it take Earth to orbit the Sun?
Answer: One year (365.25 days) - What is the name of the first human-made satellite?
Answer: Sputnik 1 - What planet is farthest from the Sun in our solar system?
Answer: Neptune - What is the name of the telescope that orbits Earth and sends back images of space?
Answer: Hubble Space Telescope
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