review in periodical exam for the fourth quarter

reviewer in science

1. Reviewer in Science 5

2. QUARRYING - human activities remove rocks, sand, gravel or other materials from the ground in order to use for construction . PLANTING TREES - reduce soil erosion caused by rainfall FORCES OF WATER - causes the seawall to break TEMPERATURE- agent of weathering changes the rock formation

3. DEFORESTATION - main reason of landslide along inclined areas that destroyed crops and properties and have killed numerous people WEATHER - the condition of the atmosphere of a particular place at a particular time SIGNAL NUMBER 2 - storm signal is announced when maximum wind speed is greater than 60kph, but not more than 100kph is expected to affect a certain place in at least 24hours TYPHOON- caused hazards to people and damaged to properties. It can also produce big waves near the coastline. It also submerged people in floods.

4. FULL MOON – The moon is all white GIBBOUS MOON – the moon is more than half light NEW MOON- The moon is all black FIRST QUARTER MOON- Half is lighted and appears second week of the month

5. REUSE - A process implying to use again for the same purpose the materials as much as possible. WASTES - refers to the used or consumed products or materials which emit foul odor and make us sick RECOVER - involves taking energy or materials from wastes to be converted into new resources. REDUCE - simply means reducing or lessening the amount of possible waste materials .

6. REPAIR - pertains to fixing or restoring broken items so that these will be used again PUBERTY is a period of the adolescent stage by which significant body changes are normally experienced by both boys and girls. FOLLICULAR PHASE - starts on the first day of menstruation but ends up to the thirteenth day of the menstrual cycle. In this phase, the lining of the uterus starts to grow due to a hormone known as estrogen .

7. DYSMENORRHEA - pertains to the cramps and abdominal pains felt during the time when the female’s uterine and muscle in the abdomen contract in order to release the menstrual fluid .

8. MENSTRUAL CYCLE - is one of the very important processes that females go through during puberty that usually lasts for an average of 28 days. It is a normal process that occurs in the female’s reproductive system as her body prepares for possible pregnancy . UTERUS - is a pear-shaped organ where unborn baby is developed. It is called the womb. RECOVER - involves taking energy or materials from wastes to be converted into new resources. REDUCE - simply means reducing or lessening the amount of possible waste materials .

9. Constellations are groups of stars that form distinct patterns in the sky

10. Polaris is also known as the North Star

11. Polaris is located in Ursa Minor.

12. The Cassiopeia constellation forms a letter W in the sky.

13. The Orion constellation is referred to as the hunter.

14. Cassiopeia

15. Orion the Hunter