المؤلّف: science team CET

سنة الإصدار: 2015

كلمات مفتاحيّة: energy

This unit, “Introduction to Energy”, is part of an innovative science and technology series for middle school students. The series was developed according to the New Generation Science Standards (NGSS) and other international standards. إلى الكتاب

موضوع/ مواضيع: , מדע וטכנולוגיה, science

فهرس الكتاب:

• Introduction to Energy

• Introduction to Energy

• Windmill

• Melting iron

• Turbine in a wind power station

• Surfer riding a wave

• 1

• 3

• 2

• Burning candle

• Bending a ruler

• Running dog

• Jumping on a trampoline

• Light of a light bulb

• Washing machine in action

• Electric power poles

• Moving car

• Hot water in a dish

• Potential energy

• Radiation energy

• Kinetic energy

• Elastic energy

• Fuel (coal)

• Sun

• Wind

• Waterfalls

• 1 Coal

• 2 Campfire

• 3 Sun

• 4 Electric power pole

• 7 Geyser

• 6 Palms in wind

• 8 Remote control

• 9 Child on a slide

• 5 Fan

• 10

• Food

• Waterfall

• Wind

• Sun

• Fuel (coal)

• Ball raised prior to its release.

• Ball midway, falling.

• Ball on the floor, compressed.

• Ball midway, rising.

• Ball at its peak.

• At this stage, the ball’s potential energy is at its maximum.

• The ball loses potential energy and gains kinetic energy.

• After hitting the floor, the ball stops and compresses; its kinetic energy is converted into elastic energy.

• When the ball hits the floor, it loses all of its potential energy, and its kinetic energy is at its maximum.

• Kinetic energy Potential energy Elastic energy

• Kinetic energy Potential energy

• A solar cooker

• A

• B

• C

• F

• E

• D

• Position A - The girl is at the maximum height on the left side.

• Position B – The girl is at the lowest point in the midlle

• Position C - The girl is at the maximum height on the right side.

صفحات:

1  2  3  4  5  6  7  8  9  10  11  12  13