# NGSS MS ESS1-3 Earth’s Place in the Universe-Comparing Solar System Objects

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NGSS MS ESS1-3 Earth’s Place in the Universe-Comparing Solar System Objects PowerPoint

Meant as a resource for background knowledge, not a student performance tool, investigation, or model. Check out my NGSS MS ESS1-3 Worksheet to check for understanding.

Can be edited for younger or older learners. Includes GIF animations to keep student attention.

Main Idea-Analysis of data from Earth-based instruments, space-based telescopes, and spacecraft have determined similarities and differences among solar system objects.

ESS1.B: Earth and the Solar System

The solar system consists of the sun and a collection of objects, including planets, their moons, and asteroids that are held in orbit around the sun by its gravitational pull on them.

Our solar system includes at least eight planets, a star called the Sun, asteroids, and comets.

Planets, asteroids, and comets all orbit the Sun.

Planets spin like a top spins on the floor.

This spin is known as rotation.

The axis of rotation is an imaginary line through the center of the planet around which the planet rotates.

Period of rotation— The amount of time it takes to make one complete rotation

Period of revolution— The time it takes a planet to move around the Sun.

Different objects in the solar system rotate and orbit the sun at different rates.

Properties of the solar system include common measurements for comparing and contrasting objects in the solar system.

Some examples include distance from the sun, period of rotation, period of revolution, mass, diameter, temperature, surface features, sizes of layering of crust and atmosphere, etc.

Astronomical Unit (AU)-The average distance between the Sun and Earth.

One AU is about 149,6000,000 km

One AU is not a constant number because planets travel in ellipses.

Diameter of a Planet-A straight line passing from side to side through the center of a body or figure, especially a circle or sphere.

Some planets are small enough that they are comparable in diameter to some of our larger moons.

Surface Features-Features of the outermost or uppermost layer of an object.

The surface of a planet has various perceptible characteristics, such as curvature, mountains, hills, creeks, sizes of volcanoes, and other bumps and lumps.

Structure-The arrangement of and relations between the parts or elements of something complex. Objects in the solar system differ.

Of all the planets, only the Earth's structure is well determined. As shown in the diagram below the Earth's interior consists of several layers: the crust, a relatively thin region of low-density silicates, the mantle, a thick region of higher-density iron-rich silicates, and the core, a central region of iron mixed with various impurities. Each of these layers is subdivided into different regions.

Composition-The nature of something's ingredients or constituents; the way in which a whole or mixture is made up.

Objects in the solar system differ.

Some objects like comets are made of ice, while other objects are rock or gas.

(e.g., knowledge of the evolution of the solar system from lunar exploration and space probes) and new developments in engineering made possible by advances in science (e.g., space-based telescopes from advances in optics and aerospace engineering).

Scientists use the patterns they find in multiple types of data at varying scales to draw conclusions about the identifying characteristics of different categories of solar system objects.

(e.g., planets, meteors, asteroids, comets) based on their features, composition, and locations within the solar system.

Planet-a celestial body moving in an elliptical orbit around a star.

Order Of the Planets From The Sun- Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Meteor-a small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light.

Commonly referred to as a shooting star.

Asteroids-a small rocky body orbiting the sun. Large numbers of these, ranging in size from nearly 600 miles (1,000 km) across (Ceres) to dust particles

Found (in the asteroid belt ) especially between the orbits of Mars and Jupiter.

Comets-a celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.

Scientists use patterns in data as evidence to describe that two objects may be similar when viewed at one scale (e.g., types of surface features) but may appear to be quite different when viewed at a different scale (e.g., diameter or number of natural satellites)

Scientists use the organization of data to facilitate drawing conclusions about the patterns of scale properties at more than one scale, such as those that are too large or too small to directly observe.

The solar system consists of the sun and a collection of objects, including planets, their moons, and asteroids that are held in orbit around the sun by its gravitational pull on them.

Scientists analyze data to compare and contrast these objects.

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