Essay on Science Notes

Submitted By kathleennxo
Words: 1605
Pages: 7
Open Document
Science study notes
Key Terms

Refraction- the bending or change in the direction of light earn it travels from one medium to another.

Angle of refraction- the angle between the refracted ray and the normal

Index of refraction- the ratio of the speed of light in a vacuum to the speed of light in a medium

Critical angle- the angle of incidence that results in an angle of refraction of 90 degrees

Total internal refraction- the situation when the angle of incidence is greater than the critical angle

Retro-reflector- an optical device in which the emergent ray is parallel to incident ray

Dispersion- the separation of white light into its constituent colours

Converging lens- a lens that is thickest in the middle and that causes incident parallel light rays to converge through a single point after refraction.

Diverging lens- a lens that is thinnest in the middle and that causes light rays to spread apart after refraction

optical centre- point of the exact centre of the lens.

principal focus- the point on the principal axis of a lens where light rays parallel to the principal axis converge after refraction

mirage- virtual image that forms as a result of refraction and total internal reflection in the earth's surface.

emergent ray- the light ray that leaves a lens after refraction

this lens equation- the mathematical relationship among do dI and f
1/do + 1/di = 1/f

accommodation - the changing of a shape of the eye lens by eye muscles to allow a sharply focused image to form on the retina

hyperopia- the inability to see near objects FAR sightedness

positive meniscus- a modified form of the converging lens shape

presbyopia- a form of far sightedness caused by loss of accommodation as a person ages

myopia- the inability to see far object NEAR sightedness

contact lens- a lens that is placed directly on the cornea of the eye

Key Concepts

CH 12 • light changes direction as it passes through a different media • light bends toward the normal when it goes from slow to fast (FST fun science teachers) and (SFA super fun ants) • total internal reflection may occur when an incident ray is aimed at a medium with a lower index of refraction (slow to fast) • many optical devices make use of the refraction and reflection of light. • the refraction and reflection of light can be used to explain natural phenomena • light relates to many careers

refraction can also be accompanied by reflection. for example a pond where u can see the fishes but u can also see the trees. another example is two way mirrors. the higher the index of refraction the slower light travels

GRASS, given required analysis solution and statement n= c/v { n is index of refraction c is the speed of light in a vacuum and v is the speed of light in a media you can also calculate it but using sin i / sin r

angle of refraction is always larger when SFA

total internal reflection occurs when an angle do incidence is larger than the critical angle

fibre optics is light traveling through a glass cable to transfer information. this occurs with a small critical angle total internal reflection occurs. this can be used for computers and cell phone medical usage etc.

triangular primes can be use din binoculars to bend light. this also is used through total internal reflection.

retro reflector return any incident light back in exactly the same direction from which it came. they are also used for bikes and signs on the roads

apparent depth is when an object looks closer ha it actually is. ex fish and paddles in water

the sun seems flat sometimes because it goes from less dense air to more dens. therefore it is refracted.

a mirage can appear when t is traveling from cool air to warm air. index of refraction decreases as air get warmer.the light then creates total internal reflection and since we see light as straight we eel it on the road

shimmering of the moon also happens with
Show More

Related Documents: Essay on Science Notes

Science Chemistry Notes

Science- chemistry notes Definitions: Atoms: Tiny particles that make up all matter. Atoms are made up of protons, neutrons and electrons. Protons and neutrons are heavier than electrons and are located at the centre of the atom, the nucleus. The electrons spin around the nucleus in a region of empty space. Neutrons are neutral-no charge. Protons-have a positive charge. Electrons-have a negative charge. Opposite charges attract each other and this is what keeps the electrons…

Words 2132 - Pages 9

Science Notes Essay

Science Revision. SOUND AND SIGHT OUTCOMESs Identify situations where waves transfer energy. Vibration in the air, in the water, in electric and magnetic fields. Recall that sound is a wave and describe how it is formed and propagates Sound is a wave and it is formed by a vibrational mechanical energy that propagates through matter as a wave. Qualitatively describe the features of waves including wavelength, frequency, speed and amplitude. Frequency: Is the amount of vibrations a wave…

Words 1330 - Pages 6

Political Science Notes Essay

Political Science Notes Foreign Policy I. Constitutional Basis for Foreign Policy Article 2 in the Constitution (PRESIDENTIAL ARTICLE) Framers of the Constitution met in 1787 in Philadelphia. Decided the president should be the person to take the lead in the foreign policy. 1. Allows the president to appoint authorities and to receive representatives officially. They put in Article 2 (authority of the president to appoint ambassadors [big operation in foreign countries], other public ministers and…

Words 1547 - Pages 7

Science 10 notes Essay

Chapter 8 Notes eq \a \ac () 8.1 Definitions: Magnitude refers to the size of a measurement or the amount (number) you are counting. Scalars/Scalar Quantities are quantities that describe magnitude but do not include direction. (4 km/h) Vectors/Vector Quantities are quantities that describe magnitude and also include direction (east, 4 km/h) Representing Vectors To distinguish between scalars and vectors, symbols for vectors in the textbook are bolded and written with arrows above them…

Words 572 - Pages 3

A Brief Note On Science Fail

Name ________________________ Date ________________________ ENGINEERING SCIENCE FAIR -- PLANNING FORM – Keep in Notebook Topic :__________________________________ Do Research to collect background information. Write a brief summary of the background information. _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________…

Words 384 - Pages 2

Religion And Science Chapter 2 Notes

WEEK 3 THURSDAY 4/18/13: RELIGION AND SCIENCE LECTURE NOTES * Hubris: height of arrogance * He is educated and has context, something beyond this world * Believes that in Asia, specifically Korea, there was hubris with Christianity * During time of colonialism * Author states that he is not denouncing Christianity, but the way it was perpetrated on the Korean people. LIINEAR THINKING and DUALISM is not apart of the cultures until you bring the religion to the people.…

Words 352 - Pages 2

Earth Science Notes Essay

ATMOSPHERE A DIRECT RELATIONSHP between the absolute temperature of an object * Sun’s energy created by nuclear fusion * Energy transmitted as electromagnetic radiation moving at the speed of light * The overall all output of solar energy over time is constant * SOLAR CONSTANT—1370 W/M^2 Earth’s Atmosphere is composed of: * Constant Gases * Variable Gases * Particulates 1. Water Vapor: * About 2% at Earth’s surface * Stores heat (a green house gas) *…

Words 461 - Pages 2

Science Yr 10 Notes Essay

Science Skills How to Write a Report 1. Aim: The question you are asking. 2. Hypothesis: ‘If the (independent variable) increases, then the (dependent variable) will increase/decrease/stay the same.’ 3. Method: Should be numbered or dot points 4. Results: Either in a table or graph. Can be observations or measurements or both. 5. Conclusion: Answer the Aim. 6. Evaluation: Talk about accuracy, reliability, validity. 7. Safety: State the piece of safety equipment and why you need it.…

Words 3299 - Pages 14

Health Science Course Note Essay

Lecture 15 – Antibody Effector Mechanisms Antibodies -Abs exist to protect us from extra and intracellular bacteria and parasites, extracellular fungi, viruses, and parasitic worms Effector Function of Abs -neutralization -opsonization -complement activation -antibody dependant cell cytotoxicity or ADCC (cell killing) -mast cell activation Ab Structure -the N-terminus end of the Ab polypeptide is the variable region, which is ‘variable’ as a result of VDJ recombination -the C-terminus…

Words 884 - Pages 4

Scientific Science Unit 2 Notes

WH: UNIT 2 REVIEW MOTTOS OF THE 19TH CENTURY “Remember the Alamo!” “Remember the Maine, and to Hell with Spain!” “Sic Semper Tyrannis!” “Propaganda of the Deed” UNIT 2 TOPICS • • • • • • • • The Scientific Revolution The Enlightenment The American Revolution The French Revolution Begins Radical Revolution The Age of Napoleon Latin American Independence Movements Nationalism in Europe: Italy and Germany UNIT 2: THE SCIENTIFIC REVOLUTION • In the 1500s, Vesalius…

Words 1722 - Pages 7