Forces Lesson 12

12/8 Force And motion

Brain Pop

https://www.brainpop.com/science/energy/forces/

Multiple Choice

What is a force?

• a push or a pull.

• a push or a slide

• gravity

• Newtons

Multiple Select

Forces allow objects to

• Start moving

• stop moving

• change speed

• change directions

• Change color

Multiple Choice

What does the measurement unit N stand for?

• Net force

• Newtons

• Neutrino

• Net weight

Multiple Choice

If the net force on an object is zero, what can you conclude?

• The object is moving quickly

• The object is moving slowly

• The object is not moving

• The object is not touching anything

Multiple Choice

What can you infer about an object moving at a constant velocity?

• No forces are acting on it

• The forces acting on it are in balance

• All forces are acting on it

• it is not moving at all

Breakout Rooms- Gravity Search (15 min)

https://www.coolkidfacts.com/gravity/

Gravity search student page- https://docs.google.com/forms/d/e/1FAIpQLSdQgaxdgJ18Pw5gUg7_vcGBiK198p746r6K9xeaTNgtMbSGUQ/viewform

Multiple Choice

What is friction?

• a force between two surfaces rubbing against each other.

• how hard it is to move something on carpet

• A pull against gravity that keeps items on the ground.

Friction Lab (3min)

https://www.youtube.com/watch?v=wwO2KQ7uZxY

Multiple Choice

A bicycle traveling on a sidewalk will stop easier than a bicycle traveling on a dirt path.

• True

• False

Multiple Choice

A rougher surface produces more friction than a smooth surface.

• True

• False

Open Ended

What do you think?

If a baseball is hit with the same force, on which surface will it roll the farthest? Grass or concrete? Explain Why.

Poll

Knowledge check up!

How are you feeling so far about force and motion?

• Not good at all

• I kind of get it

• I mostly get it

• I completely understand