Big Idea 13 Forces and Motion

Big Idea 13, Forces and Motion

Happy Monday
Today is November 6, 2023

Agenda-
Forces and Motion Matching
Quizzizz review questions
Standards Practice Book

Draw

How is your day going?

Open Ended

Learning Goals

​Identify familiar forces that cause objects to move, such as pushes or pulls, including gravity acting on falling objects.

Investigate and describe that the greater the force applied to it, the greater the change in motion of a given object.

Investigate and describe that the more mass an object has, the less effect a given force will have on the object's motion.

Match

Forces and Motion Matching

• Which force will cause an object to move away from a person/object?

• What are some forces that affect motion?

• Which force will cause an object to move toward a person/object?

• What is the name of the force that can attract and repel?

• What is the name of the force that pulls objects toward the center of Earth?

A push

They are push, pull, gravity, friction,

A pull

Magnetism

Gravity

• A push

• They are push, pull, gravity, friction,

• A pull

• Magnetism

• Gravity

Multiple Choice

Lisa went to the library. She checked out three books and added them to her book bag. What will happen to the amount of force needed to lift her book bag?

• The amount of force needed will be less.

• The amount of force needed will be the total weight of Lisa and the book bag.

• The amount of force needed will remain the same.

• The amount of force needed will be greater.

Multiple Choice

To move the heavy box shown, Kylie and her friends lifted it onto a cart with wheels. Why was it easier to move the box by placing it on wheels than by sliding it?

• There was less mass.

• There was less friction.

• There was less density.

• There was less gravity.

Multiple Choice

The graph shows how much a plant grew over 4 days.

According to the graph, how many centimeters did the plant grow between Day 1 and Day 4?

• 15 cm

• 12 cm

• 21 cm

• 72 cm

Multiple Choice

Iron filings and bar magnets were placed on a sheet of paper. The diagram shows the pattern made on the paper due to a magnetic force.

• 1

• 2

• 3

• 4

Multiple Choice

To decide if plants grow better with fertilizer, a student could start growing plants and

• give them a large amount of fertilizer.

• water them and then give them fertilizer.

• give fertilizer to some plants but not to others.

• give them fertilizer and large amounts of sunlight.

Multiple Choice

When you drop an object, what causes it to fall to the ground?

• Air resistance

• Gravity

• The push from you

• Magnetism

Multiple Choice

A ball is sitting loose on a flat wagon that is going in the direction of the arrow. If the wagon suddenly stops, the ball will

• also suddenly stop

• roll forward in the wagon towards the handle

• roll backward in the wagon away from the handle

• bounce up and down

Multiple Choice

Which statement best describes what must happen in order for a person to lift an object?

• The force of gravity must be greater than the mass of the object.

• The mass of the object must be greater than the force of gravity.

• The force of gravity must be greater than the upward pull or push on the object.

• The upward push or pull on the object must be greater than the force of gravity.

Multiple Choice

You are pushing a box. The force is shown with an arrow. The box does not move. What keeps the box from moving even though you are pushing on it?

• You are pushing the box in the wrong direction.

• There is too much air resistance to move the box.

• The force of friction is opposing the force you exert.

• The force of gravity is opposing the force you exert.

Multiple Choice

Unbalanced forces cause the motion of an object to change. If an unbalanced force acts upon an object, yet the object moves at a constant speed, what will change?

• direction

• mass

• friction

• weight

Multiple Choice

A large rock is at the top of a long, sloping hill. Although it is too big to pick up, a small push is enough to cause it to move down the hill. How can a small push cause such a large rock to move?

• The direction of the force is important, not the amount of force.

• Pushing the rock increases the friction, which causes the rock to move.

• Even a small push will balance the forces and allow the rock to move.

• The additional small push was enough to unbalance the forces acting on the rock and allow the rock to move.

Multiple Choice

During summer break, Cathy spent many days playing different sports. In one week, she went bowling, played soccer, softball, and beach volleyball. Cathy felt that moving the bowling ball required the most force. Why would it require more force?

• It has the most mass.

• Bowling is an indoor sport.

• The bowling ball is all black, while the other balls have white on them.

• Cathy has to put her fingers in the bowling ball.

Multiple Choice

Philip loads three books onto a cart and pushes it halfway down a track. At this point, he loads six more books onto the cart. What must Philip do when pushing the cart to the end of the track?

• use less force

• use more force

• use the same amount of force

• use no force

Multiple Choice

Ben put different masses on each of the carts. He then launched each cart from the same starting point using the same amount of force. Ben measured how far each cart rolled from the starting point.How will the force of the launch affect the carts?

• Cart 3 will travel the longest distance.

• Cart 1 will travel the shortest distance.

• Cart 3 will have the least change in its motion.

• Cart 1 will have the greatest change in its motion.

Multiple Choice

How does removing the masses in the above question affect the motion of the cart?

• The mass is decreased, making the cart move faster.

• The gravity is increased, making the cart move slower.

• The friction is increased, making the cart move slower.

• The mechanical energy is decreased, making the cart move faster.

Multiple Choice

The four balls below are about to be struck by a stick. If the balls are hit with the same force in the same direction, which ball will go farthest?

• ball 1

• ball 2

• ball 3

• ball 4

Multiple Choice

Felipe and Marsha were studying friction and decided to do an experiment. They place four equally sized blocks made of different materials on an elevated plastic tray. They watched the blocks move down the tray. Which block would experience the least amount of friction as it moved down the tray?

• ice block

• sponge block

• sandpaper block

• plastic block

Multiple Choice

An object is moving at a constant speed. If a balanced force is applied in the opposite direction the object is moving, what will most likely happen?

• The object will speed up.

• The object will change direction.

• The object will continue moving at a constant speed.

• The object will slow down and eventually stop moving.

Multiple Choice

Katie is sitting on the ground playing with some toy trucks (see picture below). She takes the first toy truck and, using all her force, pushes it away from her. She then takes the second toy truck, which is much lighter than the first, and pushes it away from her. How does the movement of the trucks contrast?

• The smaller truck accelerates faster and moves a greater distance because more force is acting on it.

• The smaller truck accelerates faster and moves a greater distance because it has less mass.

• The larger truck accelerates faster and moves a greater distance because it has more mass.

• The larger truck accelerates faster and moves a greater distance because less force is acting on it.