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Science

The observation, identification, description, experimental investigation, and theoretical explanation of phenomena is all part of science. Nothing is immune to the scientific process: from charm quarks that haven't existed naturally since the beginning of time to Pluto, recently demoted from planet to dwarf planet. Questions on knowledge about the material and physical aspects of our world are asked and answered here.

203,801 Questions

What is the acceleration of a 100kg canoe that feels a force of 1000N?

The acceleration of the canoe can be calculated using Newton's second law, which states that acceleration is equal to force divided by mass. In this case, the acceleration is 1000N / 100kg = 10 m/s^2.

What graph should you use to represent a lava lamp science experiment?

For a lava lamp science experiment, a line graph would be the most appropriate choice to represent the data. A line graph can effectively show changes in the height of the different layers of liquids in the lava lamp over time. Each layer can be represented by a different colored line, making it easy to compare and analyze the data. Additionally, a line graph allows for the visualization of trends and patterns in the data collected during the experiment.

What is a catchy science fair title about strawberries?

"Berry DNA: Unraveling the Genetic Secrets of Strawberries"

Why is smoke filling a room diffusion?

The smoke is attempting to reach equilibrium with the system (the closed system being the room), and as such tends to distribute itself relatively uniformly around the room.

Is pumping air into a tire diffusion osmosis or active transport?

Well, isn't that a happy little question! Pumping air into a tire is actually neither diffusion osmosis nor active transport. It's more like good old-fashioned physical work - you're simply using a pump to increase the pressure inside the tire. Just remember, there are no mistakes, only happy accidents!

How much does oxygen cost per gram?

Oxygen is free. You use it continuously, in whatever quantity you desire, drawing it

easily from the air that surrounds you, just as you have been for years, and never

paying a penny for it.

In laboratory, medical, or industrial applications, you may be charged for purification,

pressurization, packaging, or delivery. But the oxygen itself is always free.

Is grass a herbivore?

The term "herbivore" refers to animals that only eat vegetation. This is opposed to a carnivore that only eats meat and an omnivore that eats both. Grass doesn't "eat" anything, so it's not qualified to be classified by those terms.

What are variables in an investigation?

The Independent/Manipulative variable is the variable that you purposely change, and the Dependent/Responsive variable is the variable that changes as a rest of the Independent variable. You measure the dependent variable to see the effects of the Independent variable.

What parts of Chinese drilling process do the glass of water the straw and the empty glass represents?

The glass of water represents the drill bit, which is used to create a hole in the material being drilled. The straw represents the drill stem, which is the long, tubular component that connects the drill bit to the drilling rig. The empty glass represents the borehole, which is the hole that is created by the drilling process.

What are the problems faced by the people living in the region of low rainfall?

The obvious problem is lack of surface runoff, often characterized by desert conditions. A desert region has less than 10 inches of annual precipitation. Beyond the obvious, the problems are many and diverse, which usually effect the way of life, the local economy, limited or nonexistent agriculture, how people live and make a living, which plants and animals adapt to the conditions, how people obtain and conserve water and much more. In spite of the lack of falling precipitation in a desert often it has an abundance of subsurface water, sometimes close to the surface. A desert Oasis is where that subsurface water rises above the surface. In general, areas with low rainfall are more difficult to live in, because after oxygen, water is critical to survival. For that reason alone, in general deserts or desert like areas are less populated. That is not to say, that people and economies can not flourish in those regions, Dubai, and Las Vegas NV are examples of that. What such regions lack in water, is compensated by another source of water. What they lack in agriculture, and wildlife is replaced by something else desirable, tourism, in demand natural resources like oil or other things of value.

What are the advantages and disadvantages of rocks?

Rocks are a great source of radioactive dating and they are also a great source of many of the rare minerals on Earth. Rocks also lend hand in the Phosphorus cycle, which is crucial all organisms in gaining the element Phosphorus. I can think of many benefits of rocks. They are the like fossilized pages from the past. I cannot think of any negative side effects or disadvantages of rocks however.

Is a lava a luminous object?

Yes, typically lava glows red, orange, yellow, or white before it cools sufficiently to harden and become a black solid. So, while it is still hot enough to remain a viscous liquid, it gives off light, making it luminous.

Word equation for neutralisation?

The term neutralization, as used in science, generally refers to pH, and means a process by which a pH that is either above or below 7 is changed by the addition of some acid or base, to bring it back to, or closer to 7, which is the neutral pH level.

What type of plants can calm or heal a person?

Aloe plants. They cure any kinds of cuts but may sting.

Does the sun heat fresh water and salt water at the same time?

The sun heats both fresh water and salt water through a process called solar radiation. However, salt water has a higher heat capacity and can hold more heat than fresh water. This means that salt water will heat up more slowly than fresh water, but it will also retain heat for a longer period of time. In general, both types of water will eventually reach the same temperature when exposed to the same amount of sunlight.

How does a tree get its mass?

A tree gets its mass primarily through photosynthesis. During this process, trees use sunlight, water, and carbon dioxide to produce glucose, which is then converted into cellulose, the main component of a tree's structure. Additionally, trees absorb nutrients from the soil through their roots, helping them to grow and increase in mass over time.

What is a disadvantage of the incline plane?

* effort needs to move over a greater distance

What is race car spelled backwards?

Race car spelled backwards is the same thing: race car.

What is a group of dry cells connected together with their positive poles pointing to the same direction called?

A group of dry cells connected together with their positive poles pointing in the same direction is called a battery. When multiple dry cells are connected in series, their voltages add up to provide a higher total voltage output. This arrangement is commonly used in various electronic devices to power them efficiently.

What are the 10 importance of rocks to man?

Well, isn't that just a happy little question! Rocks are like nature's gift to us, providing us with materials for building homes, roads, and even beautiful sculptures. They also help us understand the Earth's history, give us important minerals for making things like jewelry and technology, and create habitats for plants and animals to thrive. Just like a painting, rocks add depth and beauty to our world, reminding us of the wonders of nature.

What color is the mesosphere?

The mesosphere does not have a distinct color since it is composed of gases and is located above the stratosphere and below the thermosphere in Earth's atmosphere. At this altitude, the mesosphere appears dark because it is where the majority of incoming sunlight is absorbed by ozone.

What are some examples of science research and engineering?

Cellular telephones, computers, medical lasers all these 20th century technologies and many others can trace their origins atleast in part to engineering and science

What is wanted friction?

This presumably refers to friction which we find useful. For instance, if you stand on a ladder which is leaning against a wall, it is friction which stops the ladder from slipping. When you walk, friction between your shoes and the ground enables you to push yourself forwards. If the friction is not big enough, you just slip, as on ice.