Planet Earth

In our study we have done photometry for open cluster M67. Photometric results are plotted in the color-magnitude diagram. The number of stars in each evolutionary phase has been estimated. The existence of blue stragglers in our result requires further research about stellar evolution and interacting binary stars.

6p tamynhan8 04-11-2020 10 1   Download

This report has been reviewed in draft form by individuals chosen for their diverse perspectives and technical expertise, in accordance with procedures approved by the NRC’s Report Review Committee. The purpose of this independent review is to provide candid and critical comments that will assist the institution in making its published report as sound as possible and to ensure that the report meets institutional standards for objectivity, evidence, and responsiveness to the study charge.

169p banhkem0908 24-11-2012 67 6   Download

Mỗi tập nổi bật các vấn đề bảo tồn xung quanh một số của các loài và môi trường trong hành tinh trái đất, sử dụng các cuộc phỏng vấn với các nhà làm phim và các số liệu nổi tiếng từ các lĩnh vực khoa học , bảo tồn , chính trị , và thần học. Các chương trình được kể bởi Simon Ba Lan và nhà sản xuất hàng loạt là Fergus Beeley.

66p donna_012345 18-01-2012 437 32   Download

Where did the water in the Oceans come from? Outgassing (H2O, CO2) of the Earth from volcanoes, early in its history, but continuing today Sedimentary rocks as old as 3.8 billion years!A much smaller amount from comets that pass by.Weak electrical attraction makes for “sticky” molecules This explains its unique properties: heat capacity surface tension dissolving power

39p thachthaoxanh 24-08-2011 48 4   Download

“Earth is a unique planet, possibly one of the few in the galaxy that has water. Nearly 71% of it’s surface is ocean. From space, Earth is brilliantly blue, white in places with clouds and ice, sometimes swirling with storms. At it’s surface the ocean is in constant motion with powerful currents that stretch for thousands of miles and towering waves. Beneath the ocean’s surface lie hidden mountain ranges, vast trenches tens of thousands of feet deep, immense hot springs, and huge volcanoes spewing molten rock in massive eruptions.”...

37p thachthaoxanh 24-08-2011 59 7   Download

Hành tinh (planet) là các thiên thể dưới cấp sao, có khối lượng nhiều lần nhỏ hơn các sao. Khối lượng của chúng không đủ để tạo ra các phản ứng tổng hợp hạt nhân giúp chúng phát sáng được như các ngôi sao nên hành tinh là các thiên thể tối. Chúng chuyển động quanh ngôi sao theo các quĩ đạo hình elip với chu kì xác định. Hệ Mặt Trời được biết đến với 8 hành tinh tính từ trong (gần Mặt Trời nhất) ra gồm: Sao Thuỷ (Mercury), Sao Kim (Venus), Trái Đất (Earth), Sao Hoả...

12p convert111 25-03-2011 171 46   Download

Volcanic eruptions are among the Earth's most powerful and destructive forces. Imagine hearing a volcano erupt thousands of miles away. Imagine looking through binoculars and seeing the top of a mountain collapse. Imagine discovering an ancient Roman city that had been buried in volcanic ash. Volcanoes are also creative forces. The Earth's first oceans and atmosphere formed from the gases given off by volcanoes. In turn, oceans and an atmosphere created the environment that made life possible on our planet. Volcanoes have also shaped the Earth's landscape.

13p lehuuloi 13-06-2010 288 17   Download

The Parties to this Agreement, REAFFIRMING the commitment to the aims and purposes of the Association of Southeast Asian Nations (ASEAN) as set forth in the Bangkok Declaration of 8 August 1967, in particular to promote regional co-operation in Southeast Asia in the spirit of equality and partnership and thereby contribute towards peace, progress and prosperity in the region, RECALLING the Kuala Lumpur Accord on Environment and Development which was adopted by the ASEAN Ministers of Environment on 19 June 1990 which calls for, inter alia, efforts leading towards the harmonisation of transbo...

24p vantrungtran 01-02-2010 100 23   Download

Purpose: To understand the importance of working together. Time: 45 minutes Materials: Six envelopes labeled A, B, C, D, E, and F. In each envelope is a square cut into 5 pieces- use hard cardboard to cut the patterns. Note: This is for a class size of 30 students. If you have over 40 students, increase the number of squares or cut pieces per square.

20p vantrungtran 01-02-2010 136 17   Download

Acknowledgement Thank you to all who have joined and supported the HOPE network since 2003, and contributed to the development of the HOPE Programme: o o o o o o o o o o Australian High Commission (Direct Aid Program) for supporting the development & production of the HOPE- ESD Teachers Guide; British High Commission; European Commission; Vodafone ATH Fiji Foundation; British Petroleum South Pacific; SOPAC; Ministry of Education- Curriculum Development Unit & District Education Officers; particularly Mrs. Viniana Kunabuli, Mrs. Kelera Taloga & Mrs.

30p vantrungtran 01-02-2010 127 27   Download

Check out these fast facts for a snapshot of Earth's evolving climate. ∗ There is little doubt that the planet is warming. Over the last century the average temperature has climbed about 1 degree Fahrenheit (0.6 of a degree Celsius) around the world. The spring ice thaw in the Northern Hemisphere occurs 9 days earlier than it did 150 years ago, and the fall freeze now typically starts 10 days later. ∗ The multinational Arctic Climate Impact Assessment (ACIA) report recently concluded that in Alaska, western Canada, and eastern Russia, average temperatures have increased as much as 4 to 7...

2p vantrungtran 01-02-2010 101 7   Download

Some people think governments should spend as much money as possible exploring outer space (for example, traveling to the Moon and to other planets). Other people disagree and think governments should spend this money for our basic needs on Earth. Which of these two opinions do you agree with? Use specific reasons and details to support your answer.

1p minhnhat1986 07-08-2009 154 4   Download