SCIENCE 6 Quarter 3 Reviewer

Which forms of energy are/are produced by a candle?

• Heat

• Electrical

• Light

• Sound

Which of the following are forms of energy?

• Heat

• Light

• Shadow

• Atom

• Electrical

How can a worker move a large rock easily? I. The worker applies a larger effort. II. The small stone is placed nearer to the large rock. III. The small stone is replaced by another stone of a smaller size.

• III only

• I and II only

• II and III only

• I, II and III

   

A man tries to push a big box away, but he cannot move it. Of the following forces, which causes this to happen? I. Gravitational force II. Electrostatic force III. Frictional Force

• I and II only

• I and III only

• II and III only

• I, II and III only

What is the direction towards which objects on Earth are pulled by the Earth?

• Back

• Center

• Front

• Side

Which type of pulley doubles your effort but does not change the direction of your force?

• Fixed Pulley

• Movable Pulley

• Block and Tackle Pulley

• Both Fixed and Movable Pulley

Which energy transformation occurs in an electric iron?

• Electricity to Heat

• Heat to Electricity

• Heat to Light

• Light to Heat

Which of the following keeps all objects on the ground?

• Acceleration

• Friction

• Gravity

• Inertia

Which household device uses the principle of the wheel and axle?

• Doorknob

• Hammer

• Knife

• Screwdriver

Which form of energy is stored in medicines?

• Chemical energy

• Electrical energy

• Light energy

• Sound energy