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Rockets have been around for hundreds of years serving various purposes. They can be used for weaponry, fireworks, ejection seats, launching vehicles like spacecrafts for artificial satellites, human space flight and discovery. The first model of rocket was invented in China and India for showing fireworks. The word ‘rocket’ is commonly used to refer to three different forms of objects:

1. A flying vehicle used by astronauts to fly into space for exploration reasons.

2. A weapon that is fired from tanks toward an airplane.

3. A toy version of any of the above two objects that is used to practice or comprehend air launching or to force fireworks into the air.

The only distinction between the rocket used to propel spacecraft into space and the kind that is used as weapon is how they are made. Spacecraft are built with a strong, short thrust that will get them into space as this is their main aim. The rocket missile must be kept in good condition to make sure that staying power is kept at the requisite paradigm. Regardless of the kind of rocket, they all use a related chemical reaction to launch the object into the sky. The chemical used to set off rockets may be gasoline, liquid oxygen or liquid hydrogen.

Making a rocket can be entertaining especially if you are working with children or if you just want to do something innovative. You have two options to choose from – either making one from scratch or buying a kit to fit together. Your homemade rocket may not fly as high as one that you can purchase but it is inexpensive and the project is entertaining. It is crucial when constructing a rocket from scratch to trace a simple design first. The guidelines below will assist you to construct one from scratch.

How To Build A Rocket

Required Materials:

Plastic Cylinder object (soda bottle is a great choice)

Nose cone

Fins

Balsawood

Wood glue

Plastic cement

Launch pad

Engine mount

Paper

Sand paper

Cotton bud

Paint

Parachute

Required Tools:

Engine

Small paintbrush

Ignition system

Pencil

Craft knife

Instructions:

1. Use the pencil to draw the plan on a piece of paper. It should have a cylindrical body, nose cone, three fins, and an engine.

2. Affix the nose cone to the cylindrical body and affix the parachute to the rear of the nose cone using plastic cement.

3. To create the fins, sketch the plan with a pencil on paper then cut out the object from the balsawood with the craft knife. Use sand paper to smooth the fins to make them smooth.

4. Use rubber cement to securely attach the fins to the soda bottle or your selection of cylindrical object.

5. Connect the engine mount to the object. It must be positioned into the bottom of the rocket underneath the fins. In order to install appropriately, take a cotton bud and smear glue to the outside of the engine mount. Slide it beneath the fins in the bottom of the rocket. The glue should hold it into place.

6. Paint your rocket with several light coats for a more appealing look. Providing the paint is entirely dried, you can launch your rocket.

Tips:

It is important to smooth the fins as air travels easily over smooth fins than rough ones.

When launching your rocket, make sure you do so in open spaces away from people, animals, vehicle and electricity cables. This will reduce the hazard of wounding or damage.

You can try working with more fins or different designs because the fins are very essential in determining the way a rocket shoots through the sky.

Lets find here more information on how to make a rocket

A measuring tape is a tool used to take the dimensions of an object or area. Tape measures come in different sizes and lengths ranging from smaller sizes of three feet or below to over one hundred feet in length. Despite the length of the tape measure being used you will often find them in two types which are METRIC or IMPERIAL. The choice is yours to make for either one however, most likely the decision will be influenced by what you are measuring or by the country you reside in.

How To Read A Tape Measure

Required Tool

Tape Measure

Required Material

Area or surface to be measured

Instructions

Usage only requires you to pull out the tape and measure what you desire and then let go for it to auto-retract or roll it back up by hand based on which type you are using. If it is an imperial or metric tape measure there is no difficulty reading the major numbers, however, there may be some troubly reading the notches used for measurements in between the numbered measurements. To distinguish between the two, imperial is measured in inches and feet whereas metric is measured in millimeters and centimeters.

Imperial tape measures are in sequence from one inch to the maximum length of the tape with notches in between every number signifying one-sixteenth of an inch. An easy way to read the notches is to think of the measurements out of sixteen at all times and then divide the number by two. Thus counting the notches at the beginning of the tape measure we have zero, then one-sixteenth of an inch, then two-sixteenth and so on until you reach sixteen-sixteenth, where you would either continually divide by two until you have one left. Or divide the top sixteen by the lower as they are multiples of two.

Therefore reading all the notches from zero to one inch you would have 1/16, 1/8, 3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, and 1. Every 12 inches you go up on an imperial tape measure you will most likely see the number of feet besides the number of inches that you have measured. Since this has been commonly regulated but may not be there in all brands of tape measures.

The metric tape measure is a little simpler to read than the imperial tape measure due to the fact that the metric system is intended to have all numbers divisible by 10. A comparison would be that the imperial uses inches and sections of an inch and feet; segments of an inch are divided into sixteen, and then twelve inches total one foot.

With metric 10 millimeters make one centimeter, and then 100 centimeters total a meter; all numbers are divisible by 10 and the notches on a metric tape measure between 0 and 10 instead of 16. This means you can quickly check for the measurement between zero and one centimeter by counting 0.1, 0.2, 0.3 etc until 0.9 and finally 1.0 centimeters. Any number thereafter would continue 1.1, 1.2 etc until 2.0 centimeters, and the trend would continue along the total length of the tape measure.

Tip

The imperial and metric regulations are totally dissimilar, and while in some cases you may be able to switch between the two it is highly inadvisable. individuals in the auto-mechanics field may say to you that you may be able to locate an imperial measurement which matches a metric measurement and vice-versa. But they will also inform you that the tools used may not correspond properly due to juxtaposing the two standards. For best results you should stick to one standard and if you are following a guide in a book or online use the prescribed measurements and standard.

Here you can find more information on how to read a tape measure.