SCIENCE Reviewer 9 - Quarter 3

How do volcanoes become extinct?

• When magma has less temperature

• When the amount of magma decreases

•    When magma from the earth stops moving

• When the source of magma was cut off due to plate movement

Why do earthquakes occur around a volcano before an eruption?

• Because of pyroclastic flow   

•   Because of the increase in the viscosity

• Because of the upward movement of magma

• Because the cooling of magma inside the crust

Which of the following spring may vary in terms of width, height, and diameter and shoots jets of hot water and steam into the air?

• Mud pot

• Geyser

• Fumarole

• Hot spring

Sun intensity is the amount of sunlight that reaches the surface of the Earth while the angle of incidence refers to the angle formed by the sun’s rays hitting the Earth’s surface. Which areas on Earth will receive intense sunlight and can receive sunlight at a 90-degree angle?

• Equator

• North Pole

• South Pole

• Tropic of Cancer

La Niña is caused by a build-up of cooler-than-normal waters in the tropical Pacific, the area of the Pacific Ocean between the Tropic of Cancer and the Tropic of Capricorn. Unusually strong, eastward-moving trade winds and ocean currents bring this cold water to the surface, a process known as upwelling. Which is the best description of the effect of La Niña?

• Normal rainfall

• Rains daily for 2 years

•   No rain in the affected area

• Greater than normal rainfall associated with the summer monsoon in Southeast Asia

  Which BEST describes climate change?

• Climate change is the change in the weather in a certain place on that day.

• Climate change is the change in the temperature of a certain area for a month.

• Climate change is the change in the sunlight received by a certain area or place that day.

• Climate change is a change in the usual weather in an area or a place that could take hundreds or even millions of years to change.

  Global warming is the rapid increase in Earth’s average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels. Which of the following is an indication of global warming?

• Constant erosion          

• Rising sea level  

• Moderate waves in the ocean

• Decrease in global temperature

Which of the following will most likely happen if climate change becomes worse?

• Expanding of glaciers

• Forest will be conserved.

• Heavy rains or typhoons seldom happen.

• There will be extensive forest fires, drought, and heatwave

Polaris is one of the most useful stars for navigators because it indicates the north direction most conveniently and accurately. Which constellation is Polaris included?

• Cassiopeia

• Crux    

• Ursa Major

• Ursa Minor

Which local constellation signifies the start of the rainy season in Matigsalug Manobo of Bukidnon?

• Baha

• Balatik

• Buwaya

• Lepu