Rolling, Sliding and Flipping Objects

Objects around us move in different ways. Some objects roll, some slide, and some can be flipped. The movement of an object depends on its shape and surface. Shapes with curved surfaces usually roll, while shapes with flat surfaces can slide. In this lesson, we will learn about rolling, sliding, and flipping objects and understand these movements with the help of simple real-life examples.

We have learned about 3-D solid shapes. Now let’s see which 3-d shapes can roll, and which can slide.

Rolling objects

• Rolling: To move by turning over and over.
• Objects with curved surfaces roll.

Example:

• Sphere shape has a curved surface.
• Ball is an example of a sphere shape. If we just move the ball it will roll.

 

Rolling Ball

• Which 3-D shapes can roll?

  Sphere, Cylinder, Cone shapes have curved surfaces. So, these shapes can roll.

Real-life examples of the objects which can roll.

 

Sliding objects

• Slide: To move objects smoothly along a surface.
• Objects with smooth plane surfaces can slide.

Example:

• Cube shape has a plain smooth surface.
• Box is an example of a cube shape. It has a smooth surface. If we push the box, it will slide.

 

Sliding box

• Which 3-D shapes can slide?
  • Cube and Cuboid shapes have smooth surfaces. So, these shapes can easily slide.
  • But Cone and cylinder shapes can also slide. Cone and cylinder shapes also have smooth plain surfaces.

Real-life examples of the objects which can slide.

 

Flipping objects

• Flipping: To turn over the objects.
• Creating a mirror image is flipping.

There are two types of flipping -

1. Vertical flip
2. Horizontal flip

Example:

Vertical flip: Top side switches to the bottom and bottom side switches to the top side.Horizontal flip: In the horizontal flip left side switches to the right side and right side switches to the left side.

 

New Words: