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2.1

Minor Versionm

by Raghottam Joshi

Introduction

A water sprinkler is a device used to spray and irrigate (supply water) crops, lawns, golf courses, etc.

In this TACtivity, we will learn to create a water sprinkler model using straws and a skewer.

Video Overview

    • Handle scissors with care.

    • Be careful with the pointed end of the wooden skewer.

  1. Take an 18 cm long straw and mark its centre. If the straw is more than 18 cm then cut the remaining part. Now, mark two points at 3 cm, on either side of the centre mark.
    • Take an 18 cm long straw and mark its centre.

    • If the straw is more than 18 cm then cut the remaining part.

    • Now, mark two points at 3 cm, on either side of the centre mark.

    • Pierce the pointed end of a wooden skewer through the centre mark of the straw.

    • Push the skewer till it emerges from the other side of the straw.

  2. Holding the sewer towards you, cut half the width of the straw at each of the 3 cm marks on the straw. Make sure that you cut the straw from the side, opposite to the pointed end of the skewer. Partially cutting the straw helps  bend both arms of the straw and  sprinkle the water.
    • Holding the sewer towards you, cut half the width of the straw at each of the 3 cm marks on the straw.

    • Make sure that you cut the straw from the side, opposite to the pointed end of the skewer.

    • Partially cutting the straw helps bend both arms of the straw and sprinkle the water.

  3. Gently push the skewer into the straw. The distance between the pointed end of the skewer and the centre of the straw should be 5.5 cm. Stick the tape to the pointed end of the skewer, as shown in the figure. Bend the straw at the cut towards the centre to form a 60 degrees angle on both the sides. Due to the cuts made in the straw, the corner will be open.
    • Gently push the skewer into the straw. The distance between the pointed end of the skewer and the centre of the straw should be 5.5 cm.

    • Stick the tape to the pointed end of the skewer, as shown in the figure.

    • Bend the straw at the cut towards the centre to form a 60 degrees angle on both the sides. Due to the cuts made in the straw, the corner will be open.

    • The straw will resemble an equilateral triangle.

  4. Now, stick the bent straw arms, which meet at the pointed end of the skewer, to the tape. Secure the tape on the straws and the skewer, as shown. Ensure that the tape does not cover the ends of the straw. They should be open.
    • Now, stick the bent straw arms, which meet at the pointed end of the skewer, to the tape.

    • Secure the tape on the straws and the skewer, as shown.

    • Ensure that the tape does not cover the ends of the straw. They should be open.

    • This is an equilateral triangle sprinkler or can be called as 60 Degree sprinkler.

  5. Take a container full of water. Place the tip of the triangle in water and spin the skewer with one hand and observe. Place the tip of the triangle in water and spin the skewer with one hand and observe.
    • Take a container full of water.

    • Place the tip of the triangle in water and spin the skewer with one hand and observe.

    • Water is not sprinkling - Ensure that both ends of the straw are open.

    • Water is not sprinkling - Ensure that the straw is neither submerged too much in the water nor above the surface of the water.

  6. Make a water sprinkler model using two straws. Make a water sprinkler model using a fat straw. Also make 45 degree and 70 degree sprinklers. Make a water sprinkler model using DIY translucent straw.
    • Make a water sprinkler model using two straws.

    • Make a water sprinkler model using a fat straw. Also make 45 degree and 70 degree sprinklers.

    • Make a water sprinkler model using DIY translucent straw.

    • To learn these variations, go to Water Sprinkler Model (Variations).

Finish Line

Vishal Bhatt

Member since: 04/26/2017

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