# Review Force and Motion-4

1. ### Attraction

No. The slight attraction between the water and the glass is not enough to balance the pull of gravity.
2. ### Air pressure

Yes! Because the plate is keeping outside air from entering the glass, outside air pressure is keeping the plate in place. As long as the outside air pressure is enough to balance the weight of the water and the plate, it will stay in place. If you made a small hole in the glass to let outside air get in, that would unbalance things, and the water would fall out.
3. ### Surface tension

No. The water tension at the surface of the water would not balance the force of gravity.
4. ### The weight of the paper card

No. Gravity is pulling down on the paper plate and the water. The weight of the paper does not help balance the force of gravity.

### Florida

SC.2.P.13.3 Recognize that objects are pulled toward the ground unless something holds them up.
 Water in a Glass, part 2 video Water in a Glass, part 3 video Water in a Glass, part 1 video Planets and Pennies video, free, ClosedCaptions Review Force and Motion-4 practice

SC.3.E.5.4 Explore the Law of Gravity by demonstrating that gravity is a force that can be overcome.
 Floating Cups video Water in a Glass, part 2 video Water in a Glass, part 3 video Water in a Glass, part 1 video Planets and Pennies video, free, ClosedCaptions More Science of Balance video Science of Balance video Force, Pressure, and Shoes: Updated video Review Force and Motion-4 practice

SC.5.P.13.4 Investigate and explain that when a force is applied to an object but it does not move, it is because another opposing force is being applied by something in the environment so that the forces are balanced.
 Bernoulli Effect video Hanging a Hammer video Torque video Water in a Glass, part 2 video Water in a Glass, part 3 video Water in a Glass, part 1 video Newton's First Law of Motion video, ClosedCaptions Obedient Coin video Strange Flame, part 2 video Strange Flame, part 1 video Science Friction video Raw Egg or Boiled? video More Science of Balance video Science of Balance video The Old Tablecloth Trick video Force, Pressure, and Shoes: Updated video Balancing a Meter Stick text page Exploring Friction text page Review Force and Motion-4 practice

SC.6.P.13.3 Investigate and describe that an unbalanced force acting on an object changes its speed, or direction of motion, or both.
 Bernoulli Effect video Floating Cups video Torque video Water in a Glass, part 2 video Water in a Glass, part 3 video Water in a Glass, part 1 video Obedient Coin video Wrong Way Balloon video Strange Flame, part 2 video Strange Flame, part 1 video Science Friction video More Science of Balance video Science of Balance video Balancing a Meter Stick text page Review Force and Motion-4 practice

### Utah

UT.3.III.2.c Compare the relative effects of forces of different strengths on an object (e.g., strong wind affects an object differently than a breeze).
 Floating Cups video Water in a Glass, part 2 video Water in a Glass, part 3 video Water in a Glass, part 1 video Newton's First Law of Motion video, ClosedCaptions Obedient Coin video Wrong Way Balloon video Strange Flame, part 2 video Strange Flame, part 1 video Raw Egg or Boiled? video The Old Tablecloth Trick video Review Force and Motion-4 practice

UT.4.II.1.c Investigate evidence that air is a substance (e.g., takes up space, moves as wind, temperature can be measured).
 Nephoscope video Air Space video Crushed Can video Review Force and Motion-4 practice

### NGSS

3-PS2-1 Plan and conduct an investigation to provide evidence of the effects of balanced and unbalanced forces on the motion of an object.
 Bernoulli Effect video The Slow Race video, ClosedCaptions Floating Cups video Torque video Water in a Glass, part 2 video Water in a Glass, part 3 video Water in a Glass, part 1 video Obedient Coin video Wrong Way Balloon video Strange Flame, part 2 video Strange Flame, part 1 video Science Friction video More Science of Balance video Science of Balance video Force, Pressure, and Shoes: Updated video Balancing a Meter Stick text page Review Force and Motion-4 practice

MS-PS2-2 Plan an investigation to provide evidence that the change in an object’s motion depends on the sum of the forces on the object and the mass of the object.
 Bernoulli Effect video Floating Cups video The Difference Between Weight and Mass video Torque video Water in a Glass, part 2 video Water in a Glass, part 3 video Water in a Glass, part 1 video Newton's First Law of Motion video, ClosedCaptions Obedient Coin video Wrong Way Balloon video Strange Flame, part 2 video Strange Flame, part 1 video Science Friction video Raw Egg or Boiled? video More Science of Balance video Science of Balance video The Old Tablecloth Trick video Smoke Rings video Balancing a Meter Stick text page Review Force and Motion-1 practice Review Force and Motion-2 practice Review Force and Motion-4 practice