📚 Topic Summary
A sphere is a three-dimensional shape that is perfectly round, like a ball. Every point on the surface of a sphere is the same distance from its center. Think of things like basketballs, globes, or even bubbles – these are all great examples of spheres! In this worksheet, we'll explore some important words related to spheres and practice identifying them.
🧮 Part A: Vocabulary
Match the words with their definitions:
- Word: Radius
- Word: Diameter
- Word: Center
- Word: Circumference
- Word: Sphere
- Definition: The distance around the sphere.
- Definition: A perfectly round 3D shape.
- Definition: The middle point of the sphere.
- Definition: The distance from the center to the edge of the sphere.
- Definition: The distance across the sphere through the center.
Answer Key:
1-D, 2-E, 3-C, 4-A, 5-B
✏️ Part B: Fill in the Blanks
Fill in the missing words in the paragraph below.
A _______ is a three-dimensional shape that is perfectly _______. The _______ is the distance from the center to any point on the surface of the sphere. The _______ is the distance across the sphere, passing through the center. A good example of a sphere is a _______.
Word Bank: sphere, radius, ball, diameter, round
Answer Key: sphere, round, radius, diameter, ball
🤔 Part C: Critical Thinking
Can you name three objects you see every day that are shaped like spheres? Why do you think spheres are a common shape in nature and in things humans create?