7th Grade Science Finds
1.1K views | +0 today
Follow
7th Grade Science Finds
Informational texts, videos and more that extend, explain or add literacy skills to current curriculum
Your new post is loading...
Your new post is loading...
Scooped by Chanelle Savich
Scoop.it!

Research update: New way to store sun’s heat - MIT News Office

Research update: New way to store sun’s heat - MIT News Office | 7th Grade Science Finds | Scoop.it
Modified carbon nanotubes can store solar energy indefinitely, then be recharged by exposure to the sun.

 

Storing the sun's energy in chemical form--a new "green" energy solution. Researchers have done it before, but either the chemicals used to store the energy were very expensive or broke down quickly. MIT is using carbon--readily available and inexpensive--in its current research.

 

S.07.PS.05b Assess the environmental impact of energy resources.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

National Geographic Education: geology

National Geographic Education: geology | 7th Grade Science Finds | Scoop.it
This collection contains a selection of content from NG Education about geology.

 

Different geologic features with photos and descriptions; good for content-specific vocabulary when studying biomes or climate based on geographical features.

 

S.07.PS.11a Determine climate based on geographical features.

 

 

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

The carbon cycle - Nathaniel Manning

The carbon cycle - Nathaniel Manning | 7th Grade Science Finds | Scoop.it
What exactly is the carbon cycle? Nathaniel Manning provides a basic look into the cyclical relationship of carbon, humans and the environment.

 

S.07.PS.03b Analyze the process of carbon, nitrogen, water cycle.

 

ed.Ted.com video. Really nice explanation.

more...
No comment yet.
Rescooped by Chanelle Savich from Amazing Science
Scoop.it!

New study: There is enough wind potential on Earth's surface to power human civilization 100 times over

New study: There is enough wind potential on Earth's surface to power human civilization 100 times over | 7th Grade Science Finds | Scoop.it

At the moment, wind power supplies about 4.1 percent of electric power in the United States. Still a bit player. Yet there’s a whole lot of untapped wind left in the world. Wind whipping through the Great Plains. Wind gusting off the shores. Wind circulating high up in the sky. So what would happen if we tried to harvest all of that wind?

 

We’d have enough energy to power the world. At least in theory. A new study published this week in Nature Climate Change finds that there’s enough wind potential both on the Earth’s surface and up in the atmosphere to power human civilization 100 times over. Right now, humans use about 18 terawatts of power worldwide. And, technically, the study found, we could extract about 400 terawatts of wind power from the Earth’s surface and 1,800 terawatts of power from the upper atmosphere.

 

Even the most optimistic near-term projections for wind power, however, tend to be more restrained. In 2008, the U.S. Department of Energy released a comprehensive report estimating that wind power could provide, at most, 20 percent of U.S. electricity by 2030. And for that to happen, the cost of wind power would have to keep plunging, the number of turbines built would have to steadily increase by about 14 percent each year, and utilities would have to build new transmission lines to accommodate the extra energy.

 

S.07.PS.05a Examine energy resources.

S.07.PS.05c Determine the best energy resource based on environmental characteristics.


Via Dr. Stefan Gruenwald
more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

Population growth.pdf

Arkansas Forest Resources Center: University of Arkansas

 

PDF is sophisticated, but good for "Extends" students in middle school. Challenging. Useful graphs and charts. Quotes from PDF are given below as examples.

 

"A universal characteristic of living things is that sexually mature individuals have the ability to produce ≥1 offspring. Thus, natural populations have the ability to grow.

 

Sizes of populations fluctuate in terrestrial, as well as aquatic, environments. The capacity for population growth, even among vertebrates, is enormous, a fact that is sometimes clearly demonstrated when species are introduced to new regions having suitable habitat.

 

Ever since humans began to understand the consequences of the rapid increase in its numbers, human population growth has been a cause for economic and ecological concern. These concerns led to the development of mathematical techniques to predict the growth of populations and to intensive study of natural and laboratory populations to learn about mechanisms of population growth and regulation."

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

Predicting wave power could double marine-based energy | R&D Mag

Predicting wave power could double marine-based energy | R&D Mag | 7th Grade Science Finds | Scoop.it
"In the search for alternative energy, scientists have focused on the sun and the wind. There is also tremendous potential in harnessing the power of the ocean's waves, but marine energy presents specific challenges that have made it a less promising resource.

 

It's a challenge to tune wave energy converters (WECs) so that they are able to harvest the maximum energy from waves, which differ in terms of their size and force. This unpredictability leads to intermittent energy collection. WECs also need to withstand the harsh winds and storms to which they are subjected in the open sea—storms which can destroy the devices."

 

S.07.PS.05c Determine the best energy resource based on environmental characteristics.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

The Energy Story - Introduction

The Energy Story - Introduction | 7th Grade Science Finds | Scoop.it
The Energy Story is a general introduction to energy. Chapters explore renewable energy, fossil fuels, electricity, circuits and many other things.

 

Website created by California Energy Commission. Website is written for middle school students. Twenty chapters in all.

 

S.07.PS.05a Examine energy resources.

S.07.PS.05c Determine the best energy resource based on environmental characteristics.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

NREL: Learning - Biomass Energy Basics

NREL: Learning - Biomass Energy Basics | 7th Grade Science Finds | Scoop.it

"We have used biomass energy, or "bioenergy"—the energy from plants and plant-derived materials—since people began burning wood to cook food and keep warm.

 

Wood is still the largest biomass energy resource today, but other sources of biomass can also be used. These include food crops, grassy and woody plants, residues from agriculture or forestry, oil-rich algae, and the organic component of municipal and industrial wastes. Even the fumes from landfills (which are methane, the main component in natural gas) can be used as a biomass energy source.

 

Biomass can be used for fuels, power production, and products that would otherwise be made from fossil fuels."

 

S.07.PS.05a Examine energy resources.

S.07.PS.05c Determine the best energy resource based on environmental characteristics.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

Wind Energy Basics

Wind Energy Basics | 7th Grade Science Finds | Scoop.it

Wind Energy Development Program: 

 

"Basic information on wind energy and wind power technology, resources, and issues of concern.

 

The terms "wind energy" or "wind power" describe the process by which the wind is used to generate mechanical power or electricity. Wind turbines convert the kinetic energy in the wind into mechanical power. This mechanical power can be used for specific tasks (such as grinding grain or pumping water) or a generator can convert this mechanical power into electricity to power homes, businesses, and schools."

 

S.07.PS.05a Examine energy resources.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

How Geothermal Energy Works | UCSUSA

How Geothermal Energy Works | UCSUSA | 7th Grade Science Finds | Scoop.it

"Heat from the earth can be used as an energy source in many ways, from large and complex power stations to small and relatively simple pumping systems. This heat energy, known as geothermal energy, can be found almost anywhere—as far away as remote deep wells in Indonesia and as close as the dirt in our backyards.

 

Many regions of the world are already tapping geothermal energy as an affordable and sustainable solution to reducing dependence on fossil fuels, and the global warming and public health risks that result from their use."

 

S.07.PS.05a Examine energy resources.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

Global Wind Energy Council: Interactive World Map of Wind Energy Installations

Global Wind Energy Council: Interactive World Map of Wind Energy Installations | 7th Grade Science Finds | Scoop.it

Wind power is present today in over 75 countries, with 24 countries having more than 1,000 MW installed.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

About Wind Energy / Why Wind Energy - CleanTechnica

About Wind Energy / Why Wind Energy - CleanTechnica | 7th Grade Science Finds | Scoop.it

Many links on this page lead to other good quality sources of information on wind energy. This particular page provides an introduction to wind power.

 

CleanTechnica is written by people who've studied renewable energy, written books and magazine articles on the topic, and professional writers. It is not associated with a university. The articles are very readable.

 

S.07.PS.05a Examine energy resources.

S.07.PS.05c Determine the best energy resource based on environmental characteristics.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

Arctic melting at 'amazing' speed

Arctic melting at 'amazing' speed | 7th Grade Science Finds | Scoop.it
BBC science editor David Shukman reports from Svalbard in Norway, where scientists say they are amazed by the speed at which Arctic sea ice is melting.

 

So, if current ways of doing things are wrecking the environment, it would be good to take a look at doing some things differently. This would be a good introductory article to the unit on determining the best energy sources based on environmental characteristics because it imparts an urgency regarding the need to change things.

 

S.07.PS.05a Examine energy resources.

S.07.PS.05c Determine the best energy resource based on environmental characteristics.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

Spark Museum of Electrical Invention » Dawn of the Electrical Age (1600-1800)

Spark Museum of Electrical Invention » Dawn of the Electrical Age (1600-1800) | 7th Grade Science Finds | Scoop.it

History of electrical invention divided into major periods. Fairly simply written; includes bullets for highlights of inventors and key discoveries for each period.

 

S.07.PS.07b Identify different energy transformations.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

Science360 - The Knowledge Network

Science360 - The Knowledge Network | 7th Grade Science Finds | Scoop.it
Science360 Knowledge Network immerses visitors in the latest wonders of science, engineering, technology and math.

 

Source for Science videos

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

Interactives | The Why Files

Interactives | The Why Files | 7th Grade Science Finds | Scoop.it

Interactive science activities -- hit a homerun, make a snowflake, control a tornado, make a rainbow, etc.

 

S.07.PS.10a Identify the factors that affect weather.
S.07.PS.10b Describe how weather is associated with fronts and pressure systems.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

Arctic melt 'like doubling CO2'

Arctic melt 'like doubling CO2' | 7th Grade Science Finds | Scoop.it
An expert has told BBC Newsnight that the loss of Arctic ice is having an impact equivalent to 20 additional years of greenhouse gases as yet more of the sun's rays are absorbed.

 

This would be a good introductory article to the unit on determining the best energy sources based on environmental characteristics because it imparts an urgency regarding the need to change things.

 

S.07.PS.05a Examine energy resources.
S.07.PS.05c Determine the best energy resource based on environmental characteristics.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

How Populations Grow: The Exponential and Logistic Equations | Learn Science at Scitable

How Populations Grow: The Exponential and Logistic Equations | Learn Science at Scitable | 7th Grade Science Finds | Scoop.it

The Nature Education Knowledge Project is written by professors from universities all over the world.

 

This article on How Populations Grow is written at a sophisticated level. It might be too difficult even for "Extends" students in 7th grade; please skim before assigning this.

 

S.07.PS.02a Describe how living things interact with each other and their environments.
S.07.PS.02b Identify the factors in the environment that influence life.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

We've Got The Power | Free Lesson Plans | Teachers | Discovery Education

We've Got The Power | Free Lesson Plans | Teachers | Discovery Education | 7th Grade Science Finds | Scoop.it
The Lesson Plan Library offers high school lesson plans covering all major school subjects and special interests.

 

"We've got the Power" lesson plan: what would students choose as a source of power in an open new place where nothing is built yet?

 

Discovery Education

 

S.07.PS.05a Examine energy resources.

S.07.PS.05c Determine the best energy resource based on environmental characteristics.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

NREL: Learning About Renewable Energy Home Page

NREL: Learning About Renewable Energy Home Page | 7th Grade Science Finds | Scoop.it

"Renewable energy and energy efficiency technologies are key to creating a clean energy future for not only the nation, but the world. This Web site describes NREL's research in renewable energy technologies, and also provides information on energy efficiency and various applications of renewable energy."

 

This introductory page gives links to other pages covering:

-Biomass Power

-Geothermal Power

-Solar Power

-Wind Energy Power

 

Other resource links on this page:

-Cars and what advances have been made regarding alternate fuel sources for powering them

-How energy is delivered and stored

-How to use renewable energy in your house.

 

S.07.PS.05a Examine energy resources.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

NREL: Learning - Wind Energy Basics: How Wind Turbines Work

NREL: Learning - Wind Energy Basics: How Wind Turbines Work | 7th Grade Science Finds | Scoop.it

"We have been harnessing the wind's energy for hundreds of years. From old Holland to farms in the United States, windmills have been used for pumping water or grinding grain. Today, the windmill's modern equivalent—a wind turbine—can use the wind's energy to generate electricity.

 

Wind turbines are mounted on a tower to capture the most energy. At 100 feet (30 meters) or more aboveground, they can take advantage of the faster and less turbulent wind. Turbines catch the wind's energy with their propeller-like blades. Usually, two or three blades are mounted on a shaft to form a rotor."

 

S.07.PS.05a Examine energy resources.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

Geothermal Basics - Basics

Geothermal Basics - Basics | 7th Grade Science Finds | Scoop.it

"Geothermal energy is defined as heat from the Earth. It is a clean, renewable resource that provides energy in the U.S. and around the world in a variety of applications and resources. Although areas with telltale signs like hot springs are more obvious and are often the first places geothermal resources are used, the heat of the earth is available everywhere, and we are learning to use it in a broader diversity of circumstances.

 

It is considered a renewable resource because the heat emanating from the interior of the Earth is essentially limitless. The heat continuously flowing from the Earth’s interior, which travels primarily by conduction, is estimated to be equivalent to 42 million megawatts (MW) of power, and is expected to remain so for billions of years to come, ensuring an inexhaustible supply of energy." 

 

S.07.PS.05a Examine energy resources.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

White House: Blueprint for a Secure Energy Future

“BLUEPRINT FOR A SECURE ENERGY FUTURE : March 2011. 

 

President Obama's plan targets three broad strategies for our energy future:

Developing and securing America's energy supplies, Providing consumers with choices to reduce costs and save energy, and Innovating our way to a clean energy future.

Huffington Post has analyzed this document by seeing how many times each of the important  keywords shows up: energy, oil, renewable, pollution, etc. Here is a link to the Huffington Post article:

http://www.huffingtonpost.com/bill-chameides/obamas-energy-plan-by-the_b_1862497.html

 

Huffington Post did the same with Romney's speeches on energy, and the article at the link above compares Romney's keyword use to Obama's to get a sense of each candidate's priorities.

 

S.07.PS.05a Examine energy resources.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

Global Wind Energy Council: Offshore Wind

Global Wind Energy Council: Offshore Wind | 7th Grade Science Finds | Scoop.it

"The potential of offshore wind is enormous. It could meet Europe’s energy demand seven times over, and the United States’ energy demand four times over.

 

Offshore wind is a relatively new technology, so costs will reduce and the technology will advance, helping offshore wind to be more efficient and cost competitive in the near term. But this exciting technology is already being incorporated into government’s energy planning around the world."

 

 

S.07.PS.05a Examine energy resources.

S.07.PS.05c Determine the best energy resource based on environmental characteristics.

more...
No comment yet.
Scooped by Chanelle Savich
Scoop.it!

World.Wind.Lg.jpg (1100x714 pixels)

World.Wind.Lg.jpg (1100x714 pixels) | 7th Grade Science Finds | Scoop.it

Wind Map showing world wide wind patterns. 

 

S.07.PS.05c Determine the best energy resource based on environmental characteristics.

more...
No comment yet.