your friend has to plan an experiment for a science fair. He asked for your help. His topic is "The Strongest Cloth for Backpacks." What variables must the experinemt include? What variables must be controlled?

Answers

Answer 1

Answer:

The strongest cloth for backpacks is the most durable fabric such as nylon, cotton or canvas. These are the most durable fabrics and can withstand wear and tear over time.

What makes a quality backpack?

A quality backpack should last a couple of years. It enables us to carry things safely. A good backpack should be waterproof, lightweight, flexible, durable and provide protection to the materials.

A quality backpack should have heavyweight material which can hold more weight.

Nylon is the most commonly used material to make premium quality backpacks. It is waterproof, lightweight and also resistant to wear and tear. The only disadvantages of using this material is its high cost and not stylish.

Nylon is a wonderful material to be used when it comes to camping and hiking.

Learn more about Nylon here:

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Answer 2

Answer: The variables will include all of the materials for the backpack. The controlled variable will be how much roughing up each cloth will experience.

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True or false in general, winds are named for the direction from which they blow True
False

Answers

Answer:

it is true because there is west,south and etc

The use of nuclear energy can have both positive and negative consequences. Which of the following is a positive consequence of using nuclear energy? a. Nuclear energy uses nonrenewable resources. b. Nuclear energy produces little air pollution. c. Uranium ore used for nuclear power plants must be mined and processed. d. Nuclear energy has no environmental impact. Please select the best answer from the choices provided A B C D

Answers

Answer

its B

Explanation:

Nuclear energy produces little air pollution.

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Answers

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