Force, work and energy

What is energy?

• Energy is the ability to do work.

• Energy is a type of force.

• Energy is a part of an element.

• Energy is another name for neutrons.

Tags

NGSS.MS-PS3-5

How does the angle of an inclined plane affect the friction or speed of the object being pushed up on it?

• The more inclined angle of the inclined plane, the more speed the object will gain

• The less inclined angle of the inclined plane, the object will move slowly

• The more inclined angle of the inclined plane, the less speed the object will gain

• The less inclined angle of the inclined plane, the more speed the object will gain

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Fill in the blank

Materials that have a __________ surface cause less friction

• smooth

• rough

• soft

• hard

In which of these is work said to have been done

• Pushing a wall

• Reading

• Pushing a box

• Standing

If the surface of the inclined plane if rough, the object being pushed up will move slowly because of

• Friction

• Gravity

• surface tension

• More force applied

__________ are some examples of inclined planes

• Screw and wedge

• Pulley and chair

what are examples of machines?

• 1. lever and pulley

• 2. A pair of scissors

• 3. A ramp

Tags

NGSS.3-5-ETS1-1

What is gravity?

• A. The force that pulls objects downwards towards the center of the earth is called gravity

• B. Gravity is a force that keep things in the air

• C. Gravity is wind

Tags

NGSS.5-PS2-1

Which is a type of form in which energy exists?

• Mechanical

• physical

• nutrients

Tags

NGSS.MS-PS3-5

What will happen if there is too much friction?

• Nothing will stop moving

• Nothing will move