Grade3 3rd Q-science

GRADE3_SCIENCE 3rd QUARTER I.

WHAT MAKES UP MATTER; PHYSICAL PROPERTIES

A. DIRECTIONS: Write T if the sentence is TRUE. If it is FALSE, underline the word that makes it false and write the correct word on the blank. _______ 1. Solids have definite shape and volume and do not flow like liquids. _______ 2. Matter is made up of tiny particles called cells. _______ 3. Liquid particles move freely and at great speed. _______ 4. Liquid particles have more spaces in between them than solid particles. _______ 5. Liquids have no definite shape. _______ 6. Solids can turn into liquids or gas. _______ 7. Gas molecules have the most amount of energy, compared to solid and liquid molecules. _______ 8. There are more spaces between solid molecules than between gas molecules. _______ 9. The attraction between solid molecules is the strongest, compared to that between liquid molecules and gas molecules. _______ 10. Gas molecules vibrate and move back and forth in place. B. Write a √ if the sentence is true and X if it is false about the MOLECULES of SODA in a bottle. _______ 1. There are bigger spaces in between them compared to air molecules. _______ 2. They move around each other. _______ 3. They can be pushed apart. _______ 4. The pull between them is weaker than molecules of a pencil. _______ 5. They have less energy compared to molecules of a pencil.

2 II. PHYSICAL CHANGES OF MATTER: EVAPORATION/ MELTING/ SOLIDIFICATION/ FREEZING/ CONDENSATION/ SUBLIMATION DIRECTIONS. Write the letter of the change described in each situation described below. A. B. C. D. E. F. _________ went

EVAPORATION MELTING SOLIDIFICATION FREEZING CONDENSATION SUBLIMATION 1.

Jolo left his glass of juice with ice on the table and out to play basketball with Derek. When Jolo

returned one hour later, the ice in his glass was gone. _________

2.

Manang Lucy put moth balls in her drawer to prevent insects and cockroaches from eating her clothes.

After three weeks, the moth balls have disappeared, and she had to put new ones. _________ put

3.

Karen filled a pot with water to cook spaghetti and it on the stove to boil. Then her friend Patty called

and told her an exciting story. Karen forgot about the water that she was preparing and when she remembered after 30 minutes, the water in the pot was boiling and was only half of the amount of water that she first put. _________ beside

4.

Fritz was riding in the school bus. He was seated the window. It was a rainy day, yet the aircon inside the bus was on full blast. Fritz noticed that there

were bits of water on the window. _________ on

5.

It was All Soul’s Day. There were three big lit candles the grave of Mark’s lolo. After praying the rosary,

Mark noticed that there were lumps of solid wax on the ground, around the candles. _________ be

6.

Mang Ricky was given a large can Baygon spray to used in the classrooms at the end of each day. After using the spray for one month, the spray was already small.

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III. SUBSTANCES THAT AFFECT LIVING THINGS; PRECAUTIONARY MEASURES IN HANDLING CERTAIN SUBSTANCES A. DIRECTIONS: Fill in the blanks. Choose from the words given. beneficial dangerous ingested

labels preservatives moderation

vitamins

1. Harmful substances should be taken in _________________. 2. Dangerous substances should never be _________________. 3. An example of a beneficial substance is _________________. 4. __________________ substances are poisonous to the body. 5. We should make it a habit to read the __________ of products before buying them. 6. _________________ are harmful substances. 7. _________________ substances are good for living things and for the environment. B. DIRECTIONS. Write whether the substance is Beneficial, Harmful or Dangerous.

Vegetables

MSG

____________________________

____________________________

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chemicals

____________________________

cigarettes ______________________________

candies ______________________________ IV. FORMS OF ENERGY; HOW LIGHT TRAVELS; LIGHTREFLECTIONS, COLORS IN WHITE LIGHT A. DIRECTIONS. Classify the following objects under the proper column. colored cellophane piece of wood sponge Transparent

bond paper acetate screen

towel Japanese paper blinds

Translucent

Opaque

B. DIRECTIONS. Encircle the letter of the correct answer. 1. Which kind of material will block off light? a.

stone

b. water

2. Which material is transparent?

c. air

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a. window

glass

b. notebook

c. frosted

3. Which material will allow light into a room? a.

brick

b. wood

c. glass

4. What are the seven colors of the visible spectrum?

5.

Light travels in a straight line called the _________________. a. rays b. reflects c. visible spectrum

6.

A _______________ is formed when an object blocks light. a. shadow b. reflection c. visible spectrum

7. Light _______________ when it bounces off an object. a. forms b. reflects c. visible spectrum 8. Light, sound and electricity are _________ of energy. a. rays b. sources c. forms