Forces
What is motion?
Motion is when something is changing its position or moving from one place to another.
What does contact mean?
Contact is when two objects touch each other.
Name one way you can apply force.
Push, Pull, Stretch, Squeeze
What are Simple Machines?
Simple Machines are basic mechanical devices that make work easier by altering the direction or magnitude of a force.
What are Non-Contact forces?
Non-contact forces are forces that act on an object without touching it.
What is force?
Force is a push or a pull that can make an object move, stop, or change direction.
What is a contact force mean?
Contact force is the push or pull that happens when two objects touch each other.
Name two strengths of forces.
Strong, Weak, Large, Small
What is a lever?
A lever is like a see-saw on a playground. It's a long stick or bar that can go up or down on something called a pivot or fulcrum. When you push down on one end the other end goes up.
List two types of non-contact forces.
Gravity, magnetic, electric and electrostatic
Who created the Laws of Motion?
Sir Isaac Newton
What four things can a contact force make an object do?
Contact forces can make an object move, stop, change direction or change shape.
Name three types of change in motion.
Changing Speed, Starting, Stopping, Changing Direction
What is triangular shaped object that splits, lifts or holds objects in place?
A wedge is a triangular-shaped object with a thin edge that tapers to a thicker base. It is used to split, lift, or hold objects in place.
List two simple machines used by First Nations people.
Red River Cart, Paddles, Digging Sticks, Antlers, Bow and Arrows, Ulu,
What is the first Law of Motion (Law of Inertia)?
An object at rest will stay at rest, and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
What contact force is being used when hitting a tennis ball?
A. Tension
B. Applied Force
C. Friction
D. Elastic/Spring
B. Applied Force
(When a human or an object comes into contact with another human or object.)
Name four types of directional forces.
Upward, Downward, from the Left, from the Right, from Both sides, from All Directions
What is an inclined plane wrapped around a cylindrical shaft. It converts rotational motion into linear motion and holds objects together.
Screw
A hammer is what type of simple machine?
Lever
What forces are being used when a dog sits and pulls on a leash?
A. Tension and Applied Force
B. Friction and Elastic/Spring
C. Applied Force and Elastic/Spring
D. Friction and Tension
D. Friction and Tension
Friction- When two things rub against each other, making the moving object slow down or stop.
Tension- When a string or rope connected to an object makes it move or stop.
When catching a baseball describe each force:
A. Applying a Force-
B. Strength of Force-
C. Direction of Force-
D. Change of Motion-
A. Squeeze
B. Strong
C. From All Directions
D. Stopping
What is a pulley and what is it used for?
A pulley is a wheel with a groove along its edge and a rope or belt that runs inside the groove. It changes the direction of a force to lift or lower objects.
Give an example of two types of simple machines.
Answers will vary.