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Jumat, 13 Mei 2016

Science Summary 2nd Semester for Grade 6

6th Grade Observing God's World 

Wavelength:  the length of one complete wave or cycle of oscillation (measured from crest to crest or trough to trough)
Electromagnetic spectrum is an arrangement of electromagnetic waves according to frequency and wavelength

Pulsars:  stars that produce rapid bursts of radio waves
Astronaut is a person who journeys into space
Space station is a structure in space in which people can live and work for weeks or months at a time
Space probe, an unmanned spacecraft that is launched specifically to explore the unknown
Satellite: any object that orbits a larger object

International Space Station: a space station that sixteen nations are working together to build
Polar orbit: an orbit in which a satellite travels perpendicular to the equator, passing over the polar regions as it circles the earth
Geostationary orbit is an orbit in which a satellite follows the direction of the earth's rotation in such a way that it stays in the same location in the sky

Global Positioning System (GPS), the most famous network of navigational satellites

Telescope is a device that makes distant objects appear clearer or closer
Refracting telescope is a type of telescope that uses lenses to gather light and form an image
Reflecting telescope is a type of telescope that uses mirrors to produce an image
Hubble space telescope: a reflecting telescope with an 8-foot-wide mirror launched into orbit around the earth in 1990

Radio telescope: an instrument that collects radio waves from space


Sputnik 1: the first artificial object to orbit the earth.
Explorer 1:  the first satellite launched by the US
Space shuttle: an American spacecraft that was the first spacecraft designed to be reused
Apollo 11: the first manned space mission to actually land on the moon
Mir: a Russian space station launched in 1986

Palapa, the series of communication satellites owned by an Indonesian telecommunication company. All the satellites were launched by the United States, starting with the first in July 1976, at which time Indonesia became the first developing country to operate its own domestic satellite system.

National Institute of Aeronautics and Space is the Indonesian government space agency. In Indonesia we called: (Lembaga Penerbangan dan Antariksa Nasional/LAPAN).
The first satellite made in Indonesia: INASAT-1.
Lapan-TUBSat is Indonesia’s first remote sensing satellite, made by the experts from LAPAN and Technical University Berlin (TUB) Germany. The uses of the satellite are for Indonesian natural resources observation and weather forecast for the Indonesian area.


Satillites that are used to relay telephone messages, television broadcasts, and other signals around the world: Communications satellite

Orbit that allows a satellite to be always located above the same location on the earth: geostationary orbit.
Satellites that help meteorologists study weather patterns around the world: weather satellites.
An orbit that allows a satellite to travel around the earth, from pole to pole, in as hort time to provide broad photo coverage of the planet: polar orbit.

Satellites that allow airplanes, ships and other vehicles to pinpoint their location: navigational satellites
Satellites that make maps, forecast crop production, spot forest fires: earth resources satellite

The inner planets: Mercury, Venus, Earth, Mars
The outer planets: Jupiter, Saturn, Uranus, Neptune, Pluto

Chemistry is the study of what substances are made of and how one substance can be changed into another.

Matter is anything that takes up space and has mass. Weight is a measure of the pull of gravity on an object. Mass is the amount of matter that makes up an object.

Atoms, a tiny particle from which all substances are composed; the smallest particle of an element. Nucleus is a tiny, extremely dense core of an atom. Electrons is the one of the tiny particles that circle around the nucleus of an atom. Protons is a positively charged particle that helps make up the nucleus of an atom.

Density is the amount of matter (mass) in one unit of volume (space). Atomic number is the number of protons in an atom. Element is a substance that is composed of only one type of atom. Compound is a substance that is composed of more than one type of atom bonded together. Molecule is a group of two or more atoms bound together. Chemical reaction is a process on which atoms of elements or compounds are rearranged to form new substances

Nickels is a very hard metal that is used to make stainless steel, rechargeable batteries, tanks to hold corrosive chemicals, and the five cent coin.
Chromium is "chrome'; a shiny metal often applied to polish steel to prevent it from rusting.
Zinc, a metal often used to coat steel to prevent it from rusting; also used in flashlight batteries.
Diamond, a hard, crystalline form of carbon that is the hardest of all known minerals
Lead is the densest of everyday metals; used to make car and truck batteries, wheel weights, and firearms ammunition.
Carbon found in two forms, graphite an diamond.
Silicon is a semi-metal that is an ingredient in sand, quartz, and glass; in pure form, used to make computer chips.
Mercury is The only metal that is liquid at room temperature.

Metals, Nonmetals, Semimetals
The three main groups of elements
Periodic Table of Elements
The organized arrangement of all known elements

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