Diameter
The diameter of a circle is a straight line that passes through the center of the circle and touches two points on the circle's edge. It is the longest distance across the circle and is always twice the length of the radius. The diameter is a fundamental measurement in geometry and is used to calculate the circumference, area, and other properties of a circle.
Study Guide:
- Definition: The diameter of a circle is the longest distance across the circle, passing through the center.
- Relationship to Radius: The diameter is always twice the length of the radius.
- Calculation: The diameter of a circle can be calculated using the formula: diameter = 2 * radius
- Application: The diameter is used to calculate the circumference of a circle using the formula: circumference = π * diameter
- Visualizing Diameter: To visualize the diameter, draw a straight line passing through the center of the circle and extending to the circle's edge.
◂Science Worksheets and Study Guides First Grade. Electricity
Study Guide
Electricity 
Worksheet/Answer key
Electricity Worksheet/Answer key
Electricity Worksheet/Answer key
Electricity
Worksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyThe resources above cover the following skills:
PHYSICAL SCIENCE (NGSS)
Waves and their Applications in Technologies for Information Transfer
Students who demonstrate understanding can:
Plan and conduct investigations to provide evidence that vibrating materials can make sound and that sound can make materials vibrate.
Use tools and materials to design and build a device that uses light or sound to solve the problem of communicating over a distance.