Force and Energy,

1. Which of these forces is always attractive in nature?

• friction

• gravitational

• elastic

• electrostatic

Tags

NGSS.MS-PS2-4

2. Which of the following is a type of force?

• light

• sound

• heat

• electrostatic

Tags

NGSS.MS-PS2-3

3. In which of the following cases, force does not change the shape of an object?

• Squeezing a rubber ball

• Pressing a spring

• Stretching a rubber band

• Lifting a stone

4. Which of the following is an example of a third-class lever?

• bottle opener

• tongs

• scissors

• see saw

5. Which of the following is not a simple machine?

• lever

• ball

• pulley

• screw

6. Pulley does not change the direction of the force applied.

• true

• false

7. The materials which get attracted towards a magnet are called magnetic materials.

• false

• true

Tags

NGSS.MS-PS2-5

8. A wheelbarrow is an example of a ______ lever.

• 1st- class

• 2 nd class

• 3rd class

9. A simple machine used to draw water from a well is ______.

• pulley

• screw

• wheel n axel

• lever

10.Force can change the direction of motion of an object

• true

• false

Tags

NGSS.MS-PS2-2