Term 1 Topics; Read Aloud 2.0 72-6-3　Sanae Ida

Thomas Edison Engineer 1 He invented electric system. Inventor He had about 400 patents. In 1876 He established an invention factory. They did work only on inventions. Engineer 1 Time: 3：48 WPM: 34.2

The Human Eye Rods are sensitive to a small amount of light Rods are most useful at night Cones Cones are larger than rods Cones are sensitive to color Light & Vision 2 Time:2：18 WPM: 52.2

American Farming Technology American farmer produced enough food to feed five people Americans has no incentive the land Now American farmer produces enough to feed 56 people The United States is the world’s largest food producing country Food & Nutrition 2 Time:2：35 WPM: 54.2

Starvation & Overeating Food & Nutrition 4 Starvation & Overeating In developing countries 10,000 people died of scurvy due to a lack of fresh vegetables Between 1846 and 1849, repeated potatoes In developed countries Developed countries are rich and have a lot of food, they are damaging health Until the 20th century, starvation was a threat to developed countries Time:3：21 WPM: 38.8

Scientific Method & Progress of Civilizations What science brought to humans Science gave humans a hope for an unlimited future Science may lead humans into disaster or universe Humans are using chemistry European culture has changed the pattern of civilization Science overcomes diseases Science 1 Time: 3：00 WPM: 36.7

The Atom & its Parts Science 3 Micro Micro is less than 1 trillionth in diameter Micro was discovered by physicists Atom 92 kinds of atoms make 92 kinds of elements Elements made of atoms make up all usual substances Time:3：22 WPM: 35.6

Molecules Science 4 Molecules are the smallest particles of chemicals The nature of the molecule Molecules are the smallest particles of chemicals A molecule has one or more kinds of atoms Molecular size The smallest molecule is a water molecule The biggest molecule is a complex organic molecule Science 4 Time: 3：57 WPM: 35.4

The Supercontinent Science 5 Time: 4：13 WPM: 52.0 Alfred Wegener He is a German meteorologist He found that each continent was originally a continent, later separated A.L. du Toit He is a geologist in South Africa The whole continent of India and the south was part of the supercontinent Science 5 Time: 4：13 WPM: 52.0

Steam Power Machine 1 They discovered that terrible power was created Galileo, Torricelli, and De Caus They discovered that terrible power was created They discovered a way to create a vacuum condition Basic principle of steam technology Water turns into steam when it boils One liter of water will be about 1600 liters of steam Time: 3：01 WPM: 46.4