help po plss kailangan ko na bukas pasahan na namen :,(


25. High electric bills happened due to high consumption of electricity.As a grade 6 pupil, how can you help conserve electrical energy?

A. Leave the light in the room on.

B. Lessen the use of appliances to minimize high energy consumption.

C. Turn off the television when not in use.

D. Wrap or cover foods and drinks in the refrigerator

26. Simple machines are things we commonly use to make our work easier. How do you describe them?

A. Lever is used to push and lift heavy objects with lesser force.

B. Inclined plane is a bumpy sloping surface.

C. Wedge is a combination of two inclined planes with a thick base and sharp edge.

D. Screw is wrapped with a spiral ridge called thread used to tighten things and lift heavy objects.

27. Simple machines help us save time, effort, energy and allow us to perform our task efficiently. How do you describe them?

A.Wedge is a combination of two inclined planes used to split hard objects such as knives and axes.

B.Wheel and axle are used to lift and move objects and people.

C. Pulley consists of a rope, cord and chain.

D. Inclined planes move light objects uphill.

28. Lever and pulley are two simple machines which are classified into different forms. How will you describe and classify pulleys?

A. Fixed pulley has an axle fixed on a surface and does not move.

B. Movable pulley moves along the axis.

C. Block and tackle is made up of a frame, several pulleys, and the rope.

D. Fixed pulley has a fulcrum, a pivot point around which a lever turns.

29. Levers are the most common simple machines which help man to perform heavy tasks easily. It is classified into 1st, 2nd and 3rd class. Which of the following explain 1st class levers?

A. Its fulcrum is between the effort and the load or resistance.

B. It converts a downward moving force into a lifting force.

C. Its load moves at a shorter distance.

D. It is observable in a wheelbarrow.

30. Levers are varied, but all have a few components. How do you describe 2nd class levers? Second class levers always have the load closer to the fulcrum than the effort, sothey will always allow a smaller effort to move a larger load, giving a mechanical advantage greater than one

A. The effort is close to the fulcrum.

B. The effort applied moves a larger load.

C. The load resistance is in its center such as a wheelbarrow.

D. The effort moves a large distance to lift a heavy load, with axle and wheel as the fulcrum.

31. Earthquakes are usually caused by underground rocks suddenly breaking along a fault. Which describes the changes that happen on its surface?

A. Cracking and shifting of Earth's surface.

B. Movement of Earth's core.

C. Landslides change the slope of a steep hill.

D. Ground shaking , ground rupture , landslides , tsunamis , and liquefaction will happen.​​