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    - Motion 51
    - Kinematics 64
    - Dynamics 34
    - Forces 26
    - Work 3
    - Energy 105
    - Power 6
    - Momentum 20
    - Circular Motion 11
    - Gravitation 9
    - Oscillation 10
    - Friction 7
    - Elasticity 3
    - Fluid Statics 4
    - Fluid Dynamics 2
  - Thermodynamics
    - Temperature 2
    - Heat 9
    - Heat Transfer 19
    - Kinetic Theory 2
    - Gas Laws 5
    - Entropy 1
    - Heat Engine 1
  - Waves & Oscillations
    - Wave Motion 2
    - Wave Types 1
    - Wave Properties 2
    - Sound Waves 50
    - Light Waves 2
    - Interference 1
    - Diffraction 2
    - Resonance 1
    - Harmonics 2
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    - Optics Reflection 1
    - Optics Interference 1
    - Optics Polarization 1
    - Optical Instruments 2
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    - Electric Charge 1
    - Electric Field 5
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    - Capacitance 3
    - Current Electricity 8
    - Ohm Law 2
    - Resistivity 1
    - Electric Power 50
    - Magnetic Field 35
    - Electromagnetic Induction 7
    - Alternating Current 3
    - Electromagnetic Waves 17
    - Circuit Theory 18
    - Electrostatics 10
  - Modern Physics
    - Atomic Physics 34
    - Quantum Theory 9
    - Particle Physics 13
    - Wave Mechanics 52
    - X Rays 9
    - Radioactivity 2
    - Spectroscopy 1
  - Nuclear Physics
    - Nuclear Radioactivity 1
  - Quantum Physics
    - Superposition 1
    - Uncertainty 1
    - Atomic Models 5
    - Photoelectric Effect 3
    - Quantum Entanglement 1
  - Relativity
    - Special Theory 1
    - Time Dilation 1
  - Astrophysics
    - Astrophysics Black Holes 8
    - Cosmic Rays 1
    - Planetary Science 16
    - Gamma Ray Astronomy 1
    - Gravitational Waves 2
  - Fluid Mechanics
    - Fluid Properties 1
    - Fluid Pressure 1
  - Measurement & Units
    - Significant Figures 1
    - Scientific Notation 2
    - Dimensional Analysis 1
    - Accuracy 4
    - Precision 4
    - Error Analysis 2
    - Measuring Instruments 3
- Chemistry
  - Physical Chemistry
    - States of Matter 107
    - Physical Gas Laws 14
    - Chemical Equilibrium 16
    - Ionic Equilibrium 3
    - Solutions 61
    - Colligative Properties 4
    - Chemical Kinetics 22
    - Electrochemistry 22
    - Surface Chemistry 4
    - Physical Quantum Chemistry 3
    - Physical Spectroscopy 4
  - Inorganic Chemistry
    - Periodic Table 76
    - Chemical Bonding 89
    - Coordination Compounds 8
    - Metallurgy 6
    - s Block Elements 12
    - p Block Elements 1
    - f Block Elements 2
    - Hydrogen 1
    - Halogens 5
    - Noble Gases 4
    - Acids & Bases 53
    - Salt Analysis 6
  - Organic Chemistry
    - Organic Compounds Classification 6
    - Structural Isomerism 2
    - Nomenclature 15
    - Hydrocarbons 13
    - Alcohols 3
    - Aldehydes 2
    - Carboxylic Acids 2
    - Amines 2
    - Organic Biomolecules 1
    - Polymers 5
    - Organic Reactions 9
  - Analytical Chemistry
    - Qualitative Analysis 3
    - Quantitative Analysis 2
    - Titrations 1
    - Chromatography 2
    - Electroanalytical Methods 1
    - Separation Techniques 9
  - Biochemistry
    - Biomolecules 13
    - Bio Carbohydrates 14
    - Proteins 26
    - Enzymes 4
    - Lipids 14
    - Metabolism 39
    - Bioenergetics 7
    - Vitamins 5
    - Hormones 1
    - Cell Signaling 4
  - Environmental Chemistry
    - Air Pollution 4
    - Soil Pollution 1
    - Waste Management 1
    - Toxicology 8
  - Industrial Chemistry
    - Pharmaceuticals 2
    - Food Chemistry 6
    - Industrial Metallurgy 6
    - Detergents 1
  - Nuclear Chemistry
    - Chemistry Radioactivity 7
    - Chemistry Nuclear Reactions 1
    - Nuclear Energy 2
    - Nuclear Safety 38
  - Polymer Chemistry
  - Theoretical Chemistry
    - Quantum Chemistry 2
    - Molecular Modeling 16
    - Computational Chemistry 1
    - Chemical Thermodynamics 41
    - Reaction Dynamics 81
    - Electronic Structure 100
    - Molecular Dynamics 19
  - Medicinal Chemistry
    - Pharmacokinetics 1
    - Drug Metabolism 1
  - Green Chemistry
  - Materials Chemistry
    - Crystal Structure 1
    - Band Theory 1
    - Nanomaterials 4
    - Biomaterials 2
    - Corrosion 1
    - Alloys 1
- Biology
  - Cell Biology
    - Cell Theory 8
    - Prokaryotic Cells 4
    - Cell Organelles 11
    - Cell Membrane 24
    - Cytoplasm 1
    - Nucleus 1
    - Cell Division 32
    - Cell Cycle 18
    - Transport Mechanisms 28
    - Cell Communication 1
  - Genetics
    - DNA Structure 1
    - Gene Expression 7
    - Mendelian Inheritance 2
    - Non Mendelian Inheritance 1
    - Genetic Disorders 1
    - Genetic Mapping 1
    - Genetic Engineering 3
    - Genomics 1
    - Epigenetics 1
  - Evolution
    - Origin of Life 9
    - Natural Selection 3
    - Variation 2
    - Adaptation 5
    - Speciation 1
    - Comparative Anatomy 12
    - Molecular Evidence 8
    - Human Evolution 4
  - Ecology
    - Ecosystem 35
    - Biomes 24
    - Population Ecology 11
    - Community Ecology 3
    - Food Chains 15
    - Food Webs 5
    - Ecological Energy Flow 5
    - Nutrient Cycles 13
    - Biodiversity 23
    - Ecological Conservation 46
    - Habitat 4
    - Succession 4
    - Ecological Adaptation 11
    - Human Impact 1
  - Human Anatomy & Physiology
    - Skeletal System 116
    - Muscular System 64
    - Nervous System 111
    - Endocrine System 46
    - Circulatory System 86
    - Respiratory System 42
    - Digestive System 35
    - Excretory System 10
    - Reproductive System 116
    - Immune System 9
    - Integumentary System 20
    - Sensory Organs 54
  - Botany Plant Biology
    - Plant Anatomy 37
    - Plant Morphology 4
    - Plant Physiology 68
    - Photosynthesis 51
    - Plant Reproduction 20
    - Plant Growth 2
    - Plant Taxonomy 43
    - Plant Ecology 18
    - Plant Pathology 6
    - Economic Botany 5
    - Seed Biology 2
    - Plant Genetics 1
    - Plant Adaptations 3
  - Zoology Animal Biology
    - Classification 37
    - Porifera 6
    - Cnidaria 6
    - Platyhelminthes 3
    - Nematoda 6
    - Annelida 7
    - Arthropoda 12
    - Mollusca 4
    - Echinodermata 6
    - Chordata 5
    - Fish 76
    - Amphibians 10
    - Reptiles 14
    - Birds 2
    - Mammals 106
    - Anatomy 17
    - Physiology 20
    - Reproduction 23
    - Development 6
    - Behavior 63
  - Microbiology
    - Bacteriology 32
    - Virology 32
    - Mycology 16
    - Parasitology 50
    - Microbial Genetics 2
    - Microbial Ecology 11
    - Pathogenic Microbiology 17
    - Food Microbiology 4
    - Industrial Microbiology 1
    - Environmental Microbiology 2
  - Biotechnology
    - Bio Genetic Engineering 3
    - Recombinant DNA 1
    - Stem Cells 4
    - Bioreactors 2
    - Bioinformatics 2
    - GMOs 4
    - Proteomics 1
    - Metabolomics 1
  - Molecular Biology
    - Biological Biomolecules 8
    - Carbohydrates 3
    - Biochemical Lipids 9
    - Bio Proteins 2
    - Bio Enzymes 21
    - Bio Nucleic Acids 2
    - Biochemical Vitamins 5
    - Bio Metabolism 60
    - Cellular Respiration 18
    - Nitrogen Metabolism 1
    - Bio Hormones 32
  - Immunology
    - Lymphatic System 3
    - B Cells 1
    - Cytokines 1
    - Hypersensitivity 1
  - Developmental Biology
    - Fertilization 9
    - Gastrulation 1
    - Organogenesis 4
    - Growth 1
    - Aging 2
- Earth & Space Science
  - Geology
    - Minerals 32
    - Rocks 26
    - Geological Rock Cycle 17
    - Plate Tectonics 43
    - Geological Volcanoes 25
    - Weathering 16
    - Erosion 11
    - Soil 3
    - Fossils 2
    - Geological Time 6
    - Geomorphology 12
    - Natural Resources 3
  - Meteorology
    - Metrological Atmosphere 3
    - Clouds 1
  - Oceanography
    - Ocean Basins 1
    - Marine Life 47
    - Coral Reefs 2
    - Marine Resources 1
  - Environmental Geoscience
    - Environmental Climate Change 1
    - Natural Hazards 7
    - Pollution 8
    - Environmental Impact 3
    - Sustainability 7
    - Conservation 5
  - Paleontology
    - Stratigraphy 2
    - Evolutionary Trends 1
    - Vertebrate Fossils 1
    - Invertebrate Fossils 1
    - Micropaleontology 1
  - Climate Science
    - Atmospheric Circulation 27
    - Ocean Currents 1
    - Climatorial Carbon Cycle 1
    - Water Cycle 4
  - Hydrology
    - Hydro Water Cycle 4
    - River Systems 1
    - Wetlands 5
    - Water Quality 7
    - Water Management 7
  - Natural Disasters
    - Earthquakes 1
    - Tsunamis 1
    - Landslides 1
    - Heatwaves 1
  - Earth Systems & Cycles
    - Atmosphere 2
    - Carbon Cycle 5
  - Soil Science
    - Soil Biology 2
- Astronomy
  - Observational Astronomy
    - History of Astronomy 5
    - Infrared Astronomy 1
  - Solar System
    - Mercury 2
    - Venus 1
    - Earth 3
    - Moon 7
    - Mars 3
    - Dwarf Planets 3
    - Asteroids 8
    - Comets 2
  - Stars & Stellar Evolution
    - Red Giants 1
    - Variable Stars 1
  - Galaxies
    - Active Galaxies 1
  - Cosmology
    - Big Bang 1
    - Cosmic Microwave 1
  - Exoplanets
  - Astrobiology
  - Astronomical Instruments
    - Space Telescope 1
  - Space Exploration & Missions
    - Satellites 2
    - Space Probes 1
    - Space Telescopes 1
    - Lunar Missions 1
  - Celestial Mechanics & Orbits
    - Orbital Motion 1
    - Newton Laws 1
    - Eclipses 3
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2nd Grade Science Quizzes, Questions & Answers

Think your child knows their 2nd grade Science? Read more

Challenge them with our fun and engaging Science quizzes! Perfect for reinforcing classroom learning and discovering new facts about the world around them. Read less

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Zoology Animal Biology Botany Plant Biology Biology Human Anatomy & Physiology States Of Matter Behavior Mammals Ecology Classification Mechanics Sensory Organs Food Chains Biotechnology Marine Life

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Science For 7-8 Year Olds

It’s never too early to learn about the wonders of science, and in this quiz geared for children around seven years old, we’ll be running through some basic questions that will give your child a great foundation...

Questions: 5 | Attempts: 4295 | Last updated: Oct 21, 2025

Sample Question 1
What is 0 degrees Centigrade in Fahrenheit?

100 degrees Fahrenheit

32 degrees Fahrenheit

1 degree Fahrenheit

Minus 10 degrees Fahrenheit

Sample Question 2
Two magnets that are held close repel each other if the poles facing each other are:

Positive and positive

Negative and negative

Either answer A or B are correct

Negative and positive

None of the above are correct

Sample Question 3
Which is harder than the other?

Gold is harder than iron

Iron is harder than gold

2nd Grade Science Quizzes, Questions & Answers

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