Science Quizzes, Questions & Answers

All Grades

Astronomy Quizzes

Observational Astronomy Solar System Stars and Stellar Evolution Galaxies Cosmology Exoplanets Astrobiology Astronomical Instruments Space Exploration and Missions Celestial Mechanics and Orbits

Space Knowledge Quiz: How Much Do You Know?

This quiz will help you study for everything in Chapter 8

Questions: 18 | Attempts: 6233 | Last updated: Nov 19, 2025

Sample Question
What is made up of stars, planets, asteroids, and the planets' moons?

Space

Solar system

Constellation

Telescopes Quiz: Learn How We See The Stars

Telescopes are a must have for any stargazer. It gives us a clear view that there is a lot of beauty to explore outside the earth. Do you believe that you know your telescope and s...

Questions: 15 | Attempts: 1349 | Last updated: Oct 27, 2025

Sample Question
What are telescopes used for?

Viewing distant objects

Viewing tiny objects

Viewing unfamiliar objects

Solar System Quiz: Can You Name Every Planet?

Explore the basics of the Solar System with this trivia quiz. Covering planetary facts, the Sun's classification, and the asteroid belt, this quiz is perfect for astronomy enth...

Questions: 9 | Attempts: 447 | Last updated: Oct 27, 2025

Sample Question
The solar system consists of.... planets

9

11

21

Biology Quizzes

Cell Biology Genetics Evolution Ecology Human Anatomy and Physiology Botany Plant Biology Zoology Animal Biology Microbiology Biotechnology Molecular Biology Immunology Developmental Biology

Circulatory System Quiz With Answers

The Circulatory System Quiz is designed to assess your knowledge of the vital systems that help blood circulate throughout the body. In this quiz, you will be asked a series of que...

Questions: 29 | Attempts: 139069 | Last updated: Mar 07, 2025

Sample Question
What organ is responsible for pumping blood in the circulatory system?

Heart

The heart, the brain, and the lungs

The lungs, the blood, and the blood vessels

The brain, the heart, and the blood vessels

Cell Structure & Function Quiz: Can You Identify All?

Here is an interesting 'cell structure and function quiz' designed to test your knowledge about cells and their functions. Cells are the building blocks of the body and con...

Questions: 20 | Attempts: 42568 | Last updated: Oct 28, 2025

Sample Question
What is the name of a double layer of phospholipids (called lipid bilayer)?

Plasma membrane

Cytoskeleton

Cellulose cell wall

Endoplasmic Reticulum

Nervous System Quiz: How Well Do You Know It?

Are you ready to take a quiz on the nervous system? Our nervous system is complex and plays an integral part in control and coordination. With the help of this quiz, not only will ...

Questions: 14 | Attempts: 20071 | Last updated: Oct 28, 2025

Sample Question
The nervous system consists of:

Brain

Spinal cord

Nerves

All of these

Physics Quizzes

Mechanics Thermodynamics Waves and Oscillations Optics Electricity and Magnetism Modern Physics Nuclear Physics Quantum Physics Relativity Astrophysics Fluid Mechanics Measurement and Units

Newton’s Laws Quiz: Can You Master All Three?

Get ready to play this "Newton's laws of motion quiz." Newton's three laws of motion are some of the most highly regarded scientific discoveries to date, but how ...

Questions: 10 | Attempts: 43667 | Last updated: Nov 12, 2025

Sample Question
How can you tell if an object is in motion?

The object will look different.

I'll be able to see the forces.

It will remain in the same position.

Its position will change in relation to other objects.

Light Reflection & Refraction Quiz: Physics Basics

Explore the principles of light in the 'Light Reflection and Refraction Quiz!' Delve into the behavior of light with concave mirrors, lenses, and different media. Understan...

Questions: 24 | Attempts: 3541 | Last updated: Oct 27, 2025

Sample Question
If an incident ray passes through the focus of the concave mirror the reflected ray will?

Pass through the pole

Parallel to the principal axis

Retrace its path

Passes through the centre of curvature

Force, Mass & Acceleration: How Well Do You Know?

A quiz on the basic points linking Force and Acceleration.

Questions: 10 | Attempts: 1538 | Last updated: Oct 27, 2025

Sample Question
If an object is moving at a constant velocity, the forces on it are:-

Unequal

Resolved

Forwards

Balanced

Chemistry Quizzes

Physical Chemistry Inorganic Chemistry Organic Chemistry Analytical Chemistry Biochemistry Environmental Chemistry Industrial Chemistry Nuclear Chemistry Polymer Chemistry Theoretical Chemistry Medicinal Chemistry Green Chemistry Materials Chemistry

Chemical Bonding Quiz: Ionic, Covalent & Metallic

Do you know about the chemical bond? Play this 'Chemical Bonding (ionic, covalent metallic) quiz' to review your knowledge regarding atoms and molecules. A chemical bond fo...

Questions: 20 | Attempts: 17131 | Last updated: Oct 28, 2025

Sample Question
When electrons cannot be gained or lost, they are

Transferred

Lost

Shared

All of these

Metals & Nonmetals Quiz: Can You Tell Them Apart?

Welcome to the Metals and Non-Metals Basic Quiz. Elements can be described as either metal or nonmetal, with one key difference being how metals look. Most of the nonmetals except ...

Questions: 15 | Attempts: 8779 | Last updated: Oct 28, 2025

Sample Question
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be

Calcium

Carbon

Silicon

Iron

Atoms & Molecules Quiz: Test Your Chemistry Basics

The atom is the smallest particle of an element. The atoms make up molecules, which in turn makeup elements. In the chemistry classes this week we discussed all the three and a tes...

Questions: 14 | Attempts: 756 | Last updated: Oct 28, 2025

Sample Question
Which drawing represents a correct Bohr's Model?

A

B

C

Earth and Space Science Quizzes

Geology Meteorology Oceanography Environmental Geoscience Paleontology Climate Science Hydrology Natural Disasters Earth Systems and Cycles Soil Science Aerospace

Earth’s Layers Quiz: What’s Beneath Our Feet?

Do you know about Earth's layers? Here is a fantastic quiz to test your knowledge! Most of the Earth is covered with water, making it unique and enabling life to exist. The Ear...

Questions: 10 | Attempts: 34223 | Last updated: Oct 28, 2025

Sample Question
The innermost layer of the Earth is

Inner core

Mantle

Outer core

Crust

Weathering & Erosion Quiz: Nature’s Force Test

Take a deep dive into the dynamic processes that constantly shape our planet with this Earth Science Quiz on Weathering and Erosion. Designed for students, educators, and geology e...

Questions: 47 | Attempts: 5994 | Last updated: Oct 28, 2025

Sample Question
What are the four agents of erosion?

Gravity, soil, landslides, water

Wind, water, landslides, air

Gravity, glaciers, wind, water

Glaciers, gravity, air, soil

Rock Cycle Quiz: Identify Rocks & Minerals

Do you know anything about rock cycles? You can pass this quiz if you know enough. The rock cycle the progression of the geologic rock's life, and it takes place within the Ear...

Questions: 16 | Attempts: 3316 | Last updated: Oct 28, 2025

Sample Question
What are rocks made of?

Quartz

Other Rocks

A mix of one or more minerals

Genetics Quizzes

DNA Structure (5) RNA Structure (5) Gene Expression (8) Biological Genetic Code (5) DNA Replication (5) Transcription (5) Translation (5) Mutation (4) Mendelian Inheritance (5) Non Mendelian Inheritance (5) Genetic Disorders (7) Genetic Mapping (5) Genetic Engineering (5) Genomics (5) Epigenetics (5)

Genetic Engineering Quiz: Are You a DNA Expert?

Are you ready to test your knowledge and understanding of the fascinating field of genetic engineering? Whether you're a biology enthusiast or just curious about the wonders of...

Questions: 10 | Attempts: 4570 | Last updated: Nov 21, 2025

Sample Question
Look at the image below. In genetic engineering, what occurs during step 3?

A new type of molecular base is formed

Different types of minerals are joined together

DNA from the bacterial cell is cloned

DNA from different organisms is joined together

Food Types Quiz: How Well Do You Know Nutrition?

Take this simple quiz of multiple choice and true and false questions to learn more about gmos and what's in the food you're eating every day!

Questions: 15 | Attempts: 2000 | Last updated: Nov 12, 2025

Sample Question
What kind of pasta looks like a little pillow?

Spaghetti

Penne

Ravioli

Macaroni

Genetics Quiz: Probability Of Inheritance Practice

Let's start this quiz it will give you the different kind of questions on probability. Find out now how much do you know about it!

Questions: 16 | Attempts: 956 | Last updated: Nov 12, 2025

Sample Question
What is the probability that a month picked at random starts with the letter J?

1/3

1/4

1/6

3/12

Solar System Quizzes

Sun (5) Mercury (5) Venus (5) Earth (5) Moon (14) Mars (5) Jupiter (5) Saturn (5) Uranus (5) Neptune (5) Dwarf Planets (5) Asteroids (8) Comets (5) Meteoroids (5) Kuiper Belt (5) Oort Cloud (5)

Solar System Quiz: How Well Do You Know the Planets?

Explore the dynamics of our solar system with 'Test Your Knowledge On Solar System! Trivia Questions'. This quiz assesses your understanding of planetary orbits, energy fro...

Questions: 20 | Attempts: 23118 | Last updated: Nov 12, 2025

Sample Question
Which planet receives the most energy from the sun?

Earth

Neptune

Asteroid

Moon

Solar System MCQ Quiz: Practice Your Space Facts

The Solar System MCQ Practice quiz assesses knowledge on various aspects of our solar system, including planetary order, surface conditions, and satellite counts, enhancing underst...

Questions: 15 | Attempts: 10010 | Last updated: Nov 12, 2025

Sample Question
The following information shows four planets in the Solar System.P: MarsQ: MercuryR: NeptuneS: UranusWhich planet is nearest from the Sun?

P

Q

R

S

Comets, Asteroids & Meteoroids Quiz: Space Rocks!

Welcome to a short quiz consisting of 10 basic questions about comets, asteroids, and meteoroids. Space is strange and interesting at the same time, a lot of is always going on out...

Questions: 10 | Attempts: 4401 | Last updated: Nov 12, 2025

Sample Question
What are the three parts of a comet?

The head, body, and tail

The nucleus, coma, and tail

The nucleus, protons, and electrons

Human Anatomy and Physiology Quizzes

Skeletal System (116) Muscular System (69) Nervous System (124) Endocrine System (78) Circulatory System (90) Respiratory System (44) Digestive System (47) Excretory System (10) Reproductive System (120) Immune System (11) Integumentary System (21) Sensory Organs (56)

Tissue Identification Quiz: Can You Spot Each Type?

This tissue identification quiz is all about facts. Whether you are just getting started or brushing up on your biology, this "Tissue Quiz" will test your knowl...

Questions: 20 | Attempts: 226267 | Last updated: Nov 12, 2025

Sample Question
Identify the following:

Stratified squamous

Simple cuboidal

Simple columnar

Adipose

Anatomical Terminology Quiz: Test Your Medical Knowledge

Are you ready to dive into the world of anatomical terminology? Put your knowledge to the test with our comprehensive Anatomical Position Quiz. This quiz is carefully crafted to ev...

Questions: 19 | Attempts: 143501 | Last updated: Nov 12, 2025

Sample Question
Which answer describes the "Anatomical Position"?

Standing erect, facing the observer, arms at the side, and palms facing to your side

Standing erect, facing the observer, arms at the side, and palms facing forward

Standing erect, facing the observer, arms at the side, and palms facing back

Standing erect, facing the observer, arms at the side, and palms facing outward

Respiratory System Quiz: How Much Do You Remember?

Embark on a journey to explore the intricacies of the human respiratory system with our engaging Respiratory System Quiz. As one of the body's fundamental systems, the respirat...

Questions: 11 | Attempts: 132673 | Last updated: Nov 12, 2025

Sample Question
Which of these is the job of the respiratory system?

Holding up the body and giving it support and shape.

Gas exchange between the external environment and the body's circulatory system.

Breaking down food for it to be used by the body.

Generating energy for the continuance of the bodily functions

Top Trending Science Quizzes

Bacteria, Protists & Fungi Quiz: Know The Micro World

A short quiz over Ch 7.1 about fungi, protists, and bacteria.

Questions: 8 | Attempts: 5615 | Last updated: Oct 28, 2025

Sample Question
Check all that apply to the Bacteria Kingdom. (3 answers)

Single celled organism single celled organism

Multi-cellular organism

Complex cell structures

Grow fast

Reproduce through spores

Share characteristics with animals, plants, or fungi

General Science Knowledge Questions! Trivia Quiz

What we have here are some general science knowledge questions! There are a lot of people who have a negative opinion of science saying how hard it is to understand some topics. Still, if one reads adequately topic by topic, they...

Questions: 107 | Attempts: 50009 | Last updated: Nov 20, 2025

Sample Question
How many colors are in a rainbow?

1

7

700

As many as the eye can see

Space Exploration Quiz: History Of The Cosmos

Explore the pivotal moments in the history of space exploration. This quiz covers key events and figures, from the early orbital missions of animals to significant human spaceflights, assessing knowledge of historical milestones...

Questions: 10 | Attempts: 107 | Last updated: Oct 27, 2025

Sample Question
What were the names of the "stray dogs" that were the first to go into orbit and return alive on board Sputnik 5?

Lisichka and Bars

Belka and Strelka

Dymka and Kozyavka

Albina and Tsyganka

Science Quiz: Basic Questions and Answers

Are you curious about the world around you? Do you love exploring how things work? Then get ready to put your knowledge to the test with our exciting science quiz! This interactive quiz is designed to challenge your...

Questions: 15 | Attempts: 347556 | Last updated: Feb 3, 2026

Sample Question
What group of stars is the sun classified in?

Supernova

Yellow Dwarf

Red Supergiant

Hypernova

World's Hardest Science Quiz You'll Ever Take!

Challenge your scientific knowledge with our Hard Science Quiz! Put your expertise to the test and tackle some of the most complex science questions from diverse disciplines. Whether you are a science enthusiast or have a curious...

Questions: 10 | Attempts: 92033 | Last updated: Nov 20, 2025

Sample Question
What kind of small objects compose much of the universe?

Atoms

Dark matter

Anti-matter

None of the above

Popular Science Quizzes

ACE It Or SpACE Out? Try These Science Related Quiz Questions

Questions: 15 | Attempts: 286113 | Last updated: Nov 20, 2025

Sample Question
What is the SI unit (International System of Units) of speed?

M/s

Cm/kg

Km/h

V/A

Science Quiz For Grade 9

Questions: 20 | Attempts: 180863 | Last updated: Jun 23, 2025

Sample Question
Distance is a ________________ quantity.

Scalar

Vector

Grade 9 Science Quiz: Review Key Concepts

Questions: 40 | Attempts: 98684 | Last updated: Nov 20, 2025

Sample Question
When is an atom considered stable?

When it has a full outer valence shell.

When it has the same amount of electrons as protons.

When it has no neutrons.

When it has an odd number of valence electrons.

Science Quiz Questions For Grade 11 and 12

Questions: 20 | Attempts: 71351 | Last updated: Nov 20, 2025

Sample Question
Why does a person sitting in a moving bus suddenly move forward when the bus suddenly stops?

Due to inertia

Due to brakes

Due to negative acceleration

Due to the force exerted by the machine

Recent Science Quizzes