Science Quiz for Grade 6

When a ball hits a wall, the force exerted by the wall on the ball:

• only changes the ball's motion.

• only deforms the ball.

• both changes the motion and deforms the ball.

• does not change the motion or deform the ball.

When two identical iron balls collide, the force from ball 1 on ball 2:

• only changes the motion of ball 2.

• only deforms ball 2.

• both changes the motion and deforms ball 2.

• does not change the motion or deform ball 2.

A force acting on an object can:

• change its speed.

• deform it.

• change its direction of motion.

• do all of the above.

Which situation shows a force changing the direction of an object's motion?

• A builder uses mortar to build a wall.

• A football player steals the ball and kicks it toward a teammate.

• A weightlifter lifts a barbell.

• A person sitting and reading a book.

Fill in the blank '…' to complete the sentence: All objects with mass......... each other with a force. This force is called gravitational force.

The force that the Earth exerts on an object is:

• Weight

• Gravitational force

• Push force

• Compression force

Which of the following statements is correct?

• Gravitational force is the same as the weight of an object.

• The weight of a 100 g object is 1 N.

• The symbol for weight is p.

• The unit of mass is N.

Which of the following conclusions about an object's weight is correct?

• An object's weight is proportional to its volume.

• An object's weight is not the magnitude of the gravitational force acting on it.

• Weight can be measured using a spring scale (force meter).

• An object's weight is proportional to its mass.

A cup of pure water and a cup of milk tea, each with the same volume of 150 ml, are placed close to each other. Which of the following statements is correct?

• The two objects have the same weight.

• The two objects have the same mass.

• There is gravitational attraction between the two objects.

• Both A and B are correct.

A book weighing 100 grams and an iron weight with a mass of 100 grams are placed close to each other on a table. Which of the following statements is incorrect?

• The two objects have the same weight.

• The two objects have the same volume.

• The two objects have the same mass.

• There is gravitational attraction between the two objects.