41. Some animals like rabbits and moles dig up soil for shelter or to find food. How does this activity contribute to the breaking down of rocks?

A. The animals hibernate under the big rocks.
B. The small rocks can now be exposed to sunlight.
C. The wastes of these animals cause the breaking of rocks.
D. The digging or burrowing of animals breaks the rocks into smaller pieces.

42. You heard over the weather report that there are public storm signals in some nearby provinces in Central Luzon according to PAGASA. How will you prepare?

A. Go to the evacuation area right away.
B. Boil sufficient volume of drinking water throughout the duration of the typhoon.
C. Make sure that the posts and roofs of your house are sturdy enough to withstand strong winds.
D. Ask an electrician to check the electrical wirings or appliances that were soaked in flood water.

43. PAGASA has just raised typhoon signal number three in Nueva Ecija and other provinces in Central Luzon like Bulacan, Tarlac, Pampanga, Nueva Vizcaya, Aurora, and Bataan. What does this typhoon signal mean?

A. Winds up to 60 kph may be expected within the next 24 hours.
B. Winds from 60-100 kph may be expected within the next 24 hours.
C. Winds with a speed of 100-185 kph are expected within at least 18 hours.
D. Winds with a speed greater than 185 kph are expected within at least 10 hours.

44. Your science teacher asked you to observe the moon for two weeks. You noticed that the moon's appearance has changed from time to time. Why does this happen?

A. Because the moon changes its size hourly.
B. Because the moon's surface is destroyed over time.
C. Because the moon loses its gas that makes it shine over years.
D. Because the illuminated portion of the moon changes as it moves around the Earth.

45. The moon has no light of its own, but how come it shines as you look at it during nighttime?

A. Because of the moon's color.
B. Because of the stars surrounding it.
C. Because of the substances present in our eyes.
D. Because it reflects the light coming from the sun.

46. Which shows the correct sequence of the moon's phases?

A. New moon - crescent moon - half-moon - quarter moon - full moon
B. New moon - full moon - half-moon - gibbous moon - crescent moon
C. New moon - gibbous moon - full moon - crescent moon - half moon
D. Gibbous moon - crescent moon - new moon - full moon - half moon

47. Upon looking at the sky, your father noticed that the moon seems to be growing. Then, you heard him saying "Planting rice will be done soon." What is the basis of your father for saying that?

A. Because there is no rain at all that night.
B. Because he realizes that it's late then to plant rice.
C. Because he thinks that the days forward will be fair.
D. Because the moon will undergo the waxing phase soon and the moisture of the soil is at a higher level that time.

48. "It's good that there are lots of stars tonight. I'll wash our dirty clothes tomorrow," said your mother. What do you think is her reason for saying that?

A. Because she was enticed by the stars.
B. Because she has a meeting the next day.
C. Because when stars are visible, fair weather is expected.
D. Because there's a lot of dirty clothes in the laundry basket.