Name the Scientists

8/12/2019 Name the Scientists

1/26


2/26


3/26


4/26


5/26

CAN YOU NAME THE SCIENTISTS?


6/26


7/26


8/26


9/26


10/26

Italian Renaissance painter, sculptor,

architect, musician, mathematician,

engineer, inventor, anatomist, geologist,

cartographer, botanist, and writer.

Greek mathematician, physicist, engineer,

inventor, and astronomer. Known for his

Archimedes principle.

Ancient Greco-Roman mathematician,

astronomer, geographer, astrologer.

English physicist & mathematician.

Formulated laws of motion and gravity

and light (optics)

Renaissance mathematician and

astronomer who formulated a heliocentric

model of the universe which placed the

sun, rather than the earth, at the center

German-speaking Silesian scientist and

Augustinian monk. Known as Father of

genetics.

French chemist and microbiologist. Known

for inventing the process of

pasteurisation.

Englist naturalist. Known for his Theory of

Evolution.

Primatologist, anthrolopologist. World

expert on chimpanzees.

Polish physicist. Nobel prize in physics

(1903). Known for the theory of

radioactivity. Dicovered Radium and

Polonium.

Italian physicist, astronomer and

mathematician . Proved that the earth

revolved around the sun.

German born physicist. Formulated the

Theory of Relativity. Known as the Father

of Modern Physics.

Invented the first telephone.

American inventor. Invented the

phonograph, camera, the first electric

lightbulb.

English scientist. Introduced the structure

of atom.

English physician. Iintroduced smallpox

vaccine.

TWINS (ANAK KEMBAR)IDENTICAL TWINS

KEMBAR SEIRAS

FRATERNAL TWINS

KEMBAR TAK SEIRAS

SIAMESE TWINS

KEMBAR SIAM

MITOSIS IN PLANT CELL

MITOSIS IN ANIMAL CELL


11/26


12/26

LEONARDO DA VINCI ARCHIMEDES

PTOLEMY ISAAC NEWTON

NICHOLAUS

COPERNICUS

GREGOR MENDEL

LOUIS PASTEUR CHARLES DARWIN

JANE GOODALL MARIE CURIE

GALILEO GALILEI ALBERT EINSTEIN

EDWARD JENNER ALEXANDER GRAHAMBELL

THOMAS ALVA

EDISON

JOHN DALTON


13/26

CELL DIVISION


14/26


15/26


16/26


17/26

FOOD PYRAMID FOOD PYRAMID

ORGANELLES


18/26


19/26

Inertia of an EggPurpose

To identify a hard-boiled egg from among a dozen, the remainder being uncooked

eggs and thereby demonstrate the Inertia of an Egg

Additional informationInertia is defined as the property of matter by which it resists changes in velocity

(speed and / or direction). The tendency of a moving object to remain moving at a

constant speed and a stationery object to remain motionless is called inertia.

Required materials

Raw & boiled eggsGlass plate

Estimated Experiment Time

Less than 5 minutes

Step-By-Step Procedure

1. Spin each egg and then touch the egg to stop it moving and let go.

2. Observe how each spun egg behaves.

Observation

The hard-boiled egg will spin readily and stops soon after it is touched. But the fresh

egg is difficult to get spinning and once it starts moving it is difficult to stop it from

moving.

Result

Only the hard boiled egg spins readily since the mass inside it is solid and evenly

distributed. In the case of the raw egg, the liquid within causes a drag effect that

resists the spin initially and once the liquid is moving it resists coming back to thestate of being motionless. The egg that spins readily and comes to a stop as soon as it

is touched is the hard-boiled egg hence.


20/26

Cup of Lava

Cup of Lava

Purpose

To demonstrate the effects of salt on oil by creating a "lava lamp" in a cup.

Additional information

Lava lamps have been around since 1963, when Englishman Edward Craven-Walker invented the first version of

the trippy contraption. For those unfamiliar with Lava Lamps, they were the staple decor of apartments in the60's. The "lamp" is comprised of a slightly triangular glass jar that is filled with colored liquid and a glob of liquid

"lava" that would magically float, dance, and break apart when the lamp was turned on.

Required materials

Salt (1 or more teaspoons)

Tap water

1/4 cup of olive or vegetable oil

Food coloring (red, green, blue, and any other color you like)

Large clear glass

Eye dropper (optional if your food coloring is not in a dropper)


About 5 to 10 minutes


1. Fill the glass with tap water, about 2/3rds of the way. You'll need to add the oil later, so make sure there is

enough room left in the cup.

2. Pour the oil into the glass slowly. The oil will float on top of the water (don't try to mix it in).

3. Add several drops of different food coloring to the water and oil.4. Slowly sprinkle 1 teaspoon of salt into the glass. Observe what happens to the oil and water mixture. Groovy!

Note

Add several drops of different food coloring for the best effects. It's like a lava lamp in your glass!

Observation

What happens to the liquid when water is added? What would happen if you add another teaspoon of salt? What

if you add SEVERAL teaspoons of salt (give it a try and see)? How do you think another substance would affect the

oil and water? What if you tried using sugar, sand, or even coffee grinds?

Result

Oil is lighter than the water, which is why it floats at the top. This is similar to what happens during oil spills on the

ocean. The salt, on the other hand, is heavier than the oil. When it's added to the glass the salt begins to sink to

the bottom of the glass, taking some of the oil with it. When the salt finally dissolves, the oil is released and again

floats to the surface above the water. This is a similar concept to how the Lava Lamp functions. The glob in the

lamp is comprised of a wax that rises and dances as it's heated from below. It expands as it becomes less dense

than the liquid around it, causing the trippy sequence that was the staple of the 60's.


21/26

Separate Salt And Pepper

Purpose

To demonstrate how static electricity can be used to separate pepper from a salt and pepper mix.

Additional information

All matter is made up of tiny atoms, which in turn are made of even smaller parts called protons, electrons and

neutrons. While protons have a positive (+) charge, electrons have a negative (-) charge and neutrons have no

charge at all. Usually, atoms have the same number of electrons and protons making them devoid of any charge orneutral.

Required materials

Comb

Salt

Pepper

Cloth or material that can create a strong static charge, preferably wool.

Inflated balloon (optional)


Less than 5 minutes


1. Shake some salt onto a flat surface with a table cloth.

2. Shake some pepper over the salt.

3. Mix the salt and pepper together with your fingertips until there is an even mixture of salt and pepper.

4. Set your comb with a static charge by rubbing it against some cloth or your inflated balloon (if you have one).

5. With your comb charged slowly lower it above the salt and pepper mixture, teeth side down until it's about 1

inch away.

6. Like magic the pepper particles separate from the salt particles and cling to the comb!

Note

Be careful not to get salt or pepper in your eyes. You may want to wear safety goggles to ensure 100% eye

protection.

Observation

What would happen if you were to charge the balloon against the wool or cloth and then use that in place of the

comb? What would happen if you quickly moved the balloon over the mixture? What if you got really close to the

mixture?

Result

When the comb is rubbed against the cloth or balloon, it becomes negatively charged. The salt and pepper areboth positively charged, which means they will form a natural attraction to the static from the comb. When the

comb is slowly placed above the mixture, the pepper particles fly up and attract. Why do the pepper particles

attract while the salt doesn't? Pepper particles are much lighter than the salt, so they're quicker to attract to the

comb. If you were to bring the comb closer to the mixture, the heavier salt would eventually cling to it as well.


22/26

ORGANELLES FUNCTIONNUCLEUS CONTROLS CELL ACTIVITIES

ROUGH ENDOPLASMIC

RETICULUM

TRANSPORT OF PROTEINS

SMOOTH ENDOPLASMIC

RETICULUM

SYNTHESIS OF LIPIDS

RIBOSOME SYNTHESIZES PROTEINS

MITOCHONDRIA SYNTESIS OF ATP BY AEROBIC RESPIRATION

CHLOROPLAST PHOTOSYNTHESIS

LYSOSOME DIGESTION OF SUBSTANCES INSIDE CELL

GOLGI APPARATUS MODIFICATION, SORTING AND TRANSPORT OF PROTEINS

AND LIPIDS

CENTRIOLE INVOLVED IN CELL DIVISION


23/26

DANCING RAISINS

Carbon dioxide gas dissolved in soft drinks gives them their fizz. You can use the carbon dioxide fizz

from a soft drink to make raisins dance.

For this experiment you will need:

a can of colorless soda (e.g., 7-Up or Sprite) a tall, clear glass or plastic cup several raisins (fresh raisins work the best)

Pour the can of soda into the tall glass. Notice the bubbles coming up from the bottom of the glass. Thebubbles are carbon dioxide gas released from the liquid.

Drop 6 or 7 raisins into the glass. Watch the raisins for a few seconds. Describe what is happening to

the raisins. Do they sink or float? Keep watching; what happens in the next several minutes?

Raisins are denser than the liquid in the soda, so initially they sink to the bottom of the glass. The

carbonated soft drink releases carbon dioxide bubbles. When these bubbles stick to the rough surface

of a raisin, the raisin is lifted because of the increase in buoyancy. When the raisin reaches the surface,

the bubbles pop, and the carbon dioxide gas escapes into the air. This causes the raisin to losebuoyancy and sink. This rising and sinking of the raisins continues until most of the carbon dioxide hasescaped, and the soda goes flat. Furthermore, with time the raisin gets soggy and becomes too heavy to

rise to the surface.

You might want to try other objects to see if they exhibit this behavior. Any object whose density isjust slightly greater than waters and has a rough surface to which the gas bubbles can attach should be

able to dance in the carbonated water. Some of the more common dancing substances are mothballs

and pieces of uncooked pasta. Try putting other objects in the carbonated water. Can you find othersubstances that dance?

Carbonated beverages are prepared by putting the beverage into a can under high pressure of carbondioxide gas. This high pressure causes the carbon dioxide gas to dissolve in the liquid. When you open

a can of soda, the noise you hear is produced by the carbon dioxide gas as it rushes out of the can.

When the can is opened, the decreased pressure allows some of the carbon dioxide gas dissolved in the

liquid to escape. This is what makes the bubbles in a soft drink.

Another way to do this experiment is to generate the carbon dioxide gas using the reaction of baking

soda and vinegar. Fill your glass about 1/2 full with water. Add one teaspoon of baking soda and stiruntil it is dissolved in the water. Add 6 or 7 raisins to the glass. SLOWLY pour in vinegar until the

glass is about 3/4 full. The vinegar and baking soda react to form carbon dioxide bubbles, and the

raisins will dance just as in the soft drink!


24/26

FIZZING AND FOAMING

With just a few household chemicals you can turn a glass of colored liquid into a froth that overflows

its container.

For this experiment you will need:

15 cm3(1 tablespoon) of baking soda (sodium bicarbonate) 15 cm3(1 tablespoon) of laundry detergent about 180 milliliters (3/4 cup) of water about 60 milliliters (1/4 cup) of vinegar several drops of food coloring (optional) a 400-milliliter (12-ounce) drinking glass a waterproof (plastic or metal) tray a teaspoon

Place the drinking glass on the tray. Put 15 cm3baking soda and 15 cm3 laundry detergent to the glass.Add 180 mL of water and a few drops of optional food coloring. Gently stir the mixture to mix the

contents of the glass. To display and observe the fizzing and foaming, quickly pour the vinegar into theglass. The mixture will foam up and over the top of the glass, covering the tray with a froth of tinybubbles.

To produce a color change when the vinegar is added to the mixture in the glass, you can substitute

some red cabbage juice for the optional food coloring. The experiment titled "Exploring Acids andBases with Red Cabbage"gives instructions on how to prepare some red cabbage juice. With red

cabbage juice, the mixture will chage color from blue-green before adding vinegar to red-orange after

the vinegar is added. For a different color change, try grape juice.

In this experiment, the fizz is produced by a chemical reaction between baking soda and vinegar.Baking soda and vinegar react, and one of the products of the reaction is carbon dioxide gas. This gas

forms bubbles that are surrounded by the liquid. The laundry detergent makes the bubbles last longer,and a foam is produced. The volume of the gas produced and trapped in the foam is much greater than

the glass can hold, so some of it spills over the top of the glass.

Baking soda is sodium bicarbonate. Vinegar contains acetic acid dissolved in water. Sodium

barcarbonate reacts with most acids. The products of the reaction with vinegar are carbon dioxide gas,sodium acetate, and water.

The reaction of sodium bicarbonate to form carbon dioxide gas is the basis of its use as a levening

agent in baking. Cakes are solid foams. The foam is produced when bubbles of carbon dioxide from the

reaction of sodium bicarbonate are trapped in the batter. As the cake bakes, the batter dries, and thetrapped bubbles of carbon dioxide form the holes in the cake.
http://scifun.chem.wisc.edu/homeexpts/ACIDBASE.htmlhttp://scifun.chem.wisc.edu/homeexpts/ACIDBASE.htmlhttp://scifun.chem.wisc.edu/homeexpts/ACIDBASE.htmlhttp://scifun.chem.wisc.edu/homeexpts/ACIDBASE.htmlhttp://scifun.chem.wisc.edu/homeexpts/ACIDBASE.html


25/26


26/26

Name the Scientists

Documents

Transcript of Name the Scientists