Motion and Speed
A change in position over time
What is motion?
A push or pull on an object.
What is a force?
Newton’s First Law is also known as this law.
What is the Law of Inertia?
A new substance forms during this type of change.
What is a chemical change?
A mixture in which one substance dissolves evenly into another.
What is a solution?
A car travels 120 km in 3 hours. Calculate its speed.
What is 40 km/h?
This force opposes motion between two surfaces.
What is friction?
This is an object’s tendency to resist a change in motion.
What is inertia?
Bread dough rising is an example of this type of change.
What is a chemical change?
In salt water, what is the solute?
What is salt?
Two runners are moving at 8 m/s. One runs east and one runs west. What is different about their motion?
What is their velocity?
A soccer ball is sitting still on the field. The forces acting on it are equal. What type of forces are present?
A soccer ball is sitting still on the field. The forces acting on it are equal. What type of forces are present?
According to Newton’s Second Law, what happens to acceleration if force increases and mass stays the same?
What is acceleration increases?
Name TWO signs that a chemical reaction has occurred.
What are any two of the following:
In salt water, what is the solvent?
What is water?
A roller coaster speeds up, slows down, and turns a corner. What single term describes all three changes?
What is acceleration?
A student pushes a desk and it begins moving across the floor. What type of forces caused the motion change?
What are unbalanced forces?
Using F = ma, calculate the force on a 10 kg object accelerating at 3 m/s².
What is 30 N?
Why does crushed antacid tablet react faster than a whole tablet?
What is increased surface area increases reaction rate?
Which separation method would best separate iron filings from sand?
What is magnetism?
A train travels 450 km in 5 hours. Another train travels 540 km in 6 hours. Which train has the greater speed?
Neither. Both travel 90 km/h.
A tug-of-war has Team A pulling with 500 N and Team B pulling with 350 N. What will happen?
What is the rope will move toward Team A because the forces are unbalanced?
Two skateboarders push off each other with equal force. One moves away faster. Explain why.
What is the faster skateboarder has less mass and therefore accelerates more?
A student mixes two clear liquids and a solid appears. What is the solid called?
What is a precipitate?
A student wants to recover salt from salt water. Which separation method should be used?
What is evaporation?