NLC Science 8 Pretest Consolidation

What is the net force in the situation?

• A. 4N, left

• B. 10N, left

• C. 15N, right

• D. 50N, right

2. The Earth has bigger mass than the Moon. If you were able to travel to

the Moon, what happens to your weight?

• A. Increases

• B. Decreases

• C. Stays the same

• D. Varies with day and night

3. Which of the following will produce a quieter room, hanging Curtains or with

bare concrete walls?

• A. Both hanging curtains or bare concrete walls has the tendency to be

  peaceful and quite depending on the location

• B. It is quieter in a room with concrete walls because sound travels faster in

  medium with the higher elastic property at molecular level

• C. It is quieter in a room with curtains because the bare concrete wall

  Brings about multiple reflections of sound

• D. It is quitter in a room with bare walls because curtains enhance the effect

  of sound reverberation

4. How a battery generates electricity?

• A. Battery works by converting its store chemical energy into electrical

  power.

• B. Once the electrolyte of the battery is used up it needs to be recharged.

• C. Provides electric current to do work.

• D. Develops a negative charge

5. Why are fuses and circuit breakers used in circuits?

• A. Fuses and circuit breakers open to the circuit when a large amount of

  current flows through the circuit.

• B. Fuses and circuit breakers increase the efficiency of the appliances within

  the circuit.

• C. Fuses and circuit breakers insulate the connection in the circuit.

• D. Fuses and circuit breakers can help out the electrical consumption.

6. Why do earthquakes occur frequently in Japan, Indonesia, and Philippines?

• A. They are surrounded by seas.

• B. They are located near the equator.

• C. They are considered archipelagic countries.

• D. They are found within the Pacific Ring of Fire.

7. What is the main cause of seismic waves?

• A. Earthquake

• B. Thunder

• C. Tsunami

• D. Volcano

8. Identify which statement describes about storm surge?

• A. It is a rise in sea level due to global warming.

• B. It is an abnormal rise of sea water due to tropical cyclone that occurs

  along the coast.

• C. It is the lowering of the temperature due to the friction between surface

  water and wind.

• D. It is a destructive wave due to underwater earthquake that occurs along

  the sea coast.

9. It is a near-Earth Objects (NEO) found on the Kuiper Belt and Oort Cloud?

• A. Asteroids

• B. Comets

• C. Meteors

• D. Meteorites

10. What are the components of comets?

• A. Dust only

• B. Metal only

• C. Dust and metal

• D. Dust, metal, and ice