## Shop Windows to the Universe

Please help support Windows to the Universe, and our activities to help Earth and space science teachers, with a tax-exempt donation today!

The periodic table of the elements, one way to describe the properties of matter.
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L.Gardiner/Windows to the Universe

# Starting Points for Science

There are some basic ideas that you find in many kinds of science. We have grouped these "starting points for science" into three areas: space, time, and matter.

On one hand, "space" is the term we use for everything beyond Earth. "Space" is also the way we tell an object's location or the distance between objects.

Time is the second key idea that helps us get detailed in describing events. Measures of time may be in seconds, days, months, or years.

Out third key concept is matter. Matter is the "stuff" in the Universe. The amount of matter in an object is called the object's mass.

#### Shop Windows to the Universe Science Store!

Our online store includes fun classroom activities for you and your students. Issues of NESTA's quarterly journal, The Earth Scientist are also full of classroom activities on different topics in Earth and space science!

## Traveling Nitrogen Classroom Activity Kit

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

## What is mass?

Would it be more difficult to pull an elephant or a mouse? If you pulled each animal the same amount, the mouse would come towards you but the elephant would not move at all, even if he didn’t try to...more

## Tools for Math and Science

In order to study and explain space weather, scientists need to use some pretty complex math. So if you would like to study space weather when you grow up, keep plugging away in your math class! For example,...more

## Starting Points for Science

There are some basic ideas that you find in many kinds of science. We have grouped these "starting points for science" into three areas: space, time, and matter. On one hand, "space" is the term we use...more

## What is a Supercomputer?

Some science problems are so complicated that you need SUPERCOMPUTING power to tackle them! Just what is a supercomputer? A supercomputer is a computer that is one of the fastest or most powerful computers...more

## Using Computers for Science

Computers have become a normal part of life. They are used to send e-mail, write a school report or look up recipes. They are used to crunch the latest baseball stats and deliver phone calls to the right...more

## Universal Time

When it is noon where you live, it is midnight on the opposite side of the world. Usually when we think of time, we mean "the time of day where I live". If we say something happened at 9 AM, we mean it...more

## The Magnetic Field

The force of magnetism causes material to point along the direction the magnetic force points. Here's another picture of how this works. This picture shows where the magnetic poles of the Earth are to...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information.