Jump to main content
Search
Search
Close
Resource Type:
Science Projects
Project Guides
Careers
STEM Activities
Lesson Plans
Video Lessons
Videos
Blog
All
Please enter a search term in the text box.
Menu
Science Projects
Topic Selection Wizard
By Area of Science
By Grade Level
By Global Goals
Science Project Kits
Project Guides
Scientific Method
Engineering Design Process
Advanced Science Competitions
Reference Materials
Science Fair Directory
Fun Science Activities
STEM Activities for Kids
Science Camps & Programs
Science Experiments
Teachers
Engineering Challenge
Lesson Plans
Video Lessons
Science Fair Tools
STEM Classroom Kits
Learning Management Systems
Blog
STEM Calendar
Science Project Pathways
Science Project Help
Topic Selection Wizard
Ask an Expert
Science Careers
Career Discovery Tool
Earth & Physical Sciences
Life Sciences
Engineering
Math & Computer Science
Health
New!
Space Exploration 2.0
COVID-19 Resources
SimPandemic
Science Projects
By Area of Science
By Grade Level
By Global Goals
Back
Grade Levels
Elementary School
Kindergarten
First Grade
Second Grade
Third Grade
Fourth Grade
Fifth Grade
Middle School
Sixth Grade
Seventh Grade
Eighth Grade
High School
Ninth Grade
Tenth Grade
Eleventh Grade
Twelfth Grade
Science Projects
By Area of Science
By Grade Level
By Global Goals
Back
Physical Science
Aerodynamics & Hydrodynamics
Astronomy
Chemistry
Cooking & Food Science
Cosmetic Chemistry
Exoplanets
Green Chemistry
Music
Photography, Digital Photography & Video
Physics
Sports Science
Life Science
Agricultural Technology
Biotechnology
Diabetes
Genetic Engineering
Genetics & Genomics
Human Biology & Health
Mammalian Biology
Medical Biotechnology
Microbiology
Pandemics – COVID-19
Plant Biology
Zoology
Engineering
3D Printing
Civil Engineering
Electricity & Electronics
Energy & Power
Environmental Engineering
Materials Science
Mechanical Engineering
Robotics
Self-Driving Cars
Space Exploration
Earth and Environmental Science
Environmental Science
Geology
Ocean Sciences
Weather & Atmosphere
Behavioral and Social Science
Human Behavior
Sociology
Math and Computer Science
Artificial Intelligence
Big Data
Computer Science
Cybersecurity
Pure Mathematics
Video & Computer Games
Virtual Reality
Science Projects
By Area of Science
By Grade Level
By Global Goals
Back
Global Goals
(Based on United Nations Sustainable Development Goals)
UNSDG
Zero Hunger
Good Health and Well-Being
Quality Education
Clean Water and Sanitation
Affordable and Clean Energy
Decent Work and Economic Growth
Industry, Innovation and Infrastructure
Reduced Inequalities
Sustainable Cities and Communities
Responsible Consumption and Production
Climate Action
Life Below Water
Life on Land
Peace, Justice and Strong Institutions
Science Projects
Topic Selection Wizard
By Area of Science
By Grade Level
By Global Goals
Science Project Kits
Teachers
Engineering Challenge
Lesson Plans
Video Lessons
STEM Activities
Science Fair Tools
STEM Classroom Kits
Learning Management Systems
Blog
Career Discovery Tool
STEM Calendar
Science Project Pathways
Donate
Image Credit
Add Favorite
Print
Email
Share Menu
Facebook
Pinterest
Twitter
More Menu
Report a Problem
Description:
The circle diameter is measured with a ruler.
Source:
Svenja Lohner, Science Buddies
License:
Science Buddies
Explore Our Science Videos
Can you solve this air pressure puzzle? | STEM Activity
Candy Core Samples | STEM Activity
How to Calibrate the Sound Sensor in Phyphox
Quick Links
X
Top
Free science fair projects.
/-/https/www.sciencebuddies.org/cdn/Files/21464/5/sb-logo.png){kind=logo}
/-/https/www.sciencebuddies.org/cdn/Files/21464/5/sb-logo.png){kind=logo}
/-/https/www.sciencebuddies.org/cdn/Files/13296/7/measure-circle-diameter.jpg)
/-/https/img.youtube.com/vi/T36Th5UPb3I/0.jpg)
/-/https/img.youtube.com/vi/Kfvt5zs2se8/0.jpg)
/-/https/img.youtube.com/vi/3cpZEVSC6Nw/0.jpg)