Forces
What is a force?
The push or pull on objects.
is friction a contact or non-contact force?
What's an independent variable?
What is changing.
What is energy transfer?
The movement of energy from one object to another. double points
_________________ is the movement or change of an object.
Work
What is acceleration?
When an object something speeds up.
double points
What is friction in water called?
It's called fluid friction.
The thing you measure at the end of an experiment is called...
The dependent variable.
What is the only way sound waves can travel?
Through a solid, liquid, or gas.
Name all the non-contact forces.
Gravity and Magnetism.
Who discovered gravity?
Isaac Newton
What are the 2 factors influencing friction
How rough surfaces are and how much force is used. double points
How does the amount of soda you drink affect the number of cavities in your teeth? The INDEPENDENT variable is:
The amount of soda you drink. double points
How does wave energy moves an object in water?
It moves the object up and down.
What type of force causes an object to move?
An unbalanced force.
Difference between a balance force and an unbalanced force.
A balance force are equal forces on both side where the object doesn't move. An unbalanced force is a force where one side is applying more force.
Which surface has the least amount of friction, a rug or ice?
The Ice.
How does the amount of pop you drink affect the number of cavities in your teeth? A CONTROLLED variable needed to make this experiment fair is:
How often you brush your teeth.
What is the only way sound can not be heard?
When sound is in a vacuum.
What is the tool to measure force and what unit is used to measure force?
A spring scale and in Newtons.
Name the 5 forces.
Push, Pull, Magnetism, Gravity, Friction.
If i am running to the left, which way is friction acting?
The friction is going to the right.
Add half of the leading team's points to yours.
A cow is given a grass to eat and then compared to another cow that was not given any grass to eat. Both cows were weighed at 2 years. What is the control variable?
Both cows were weighed at 2 years.
What is sound energy?
Sound energy is energy that moves in vibrations. double points
Name all the contact forces.
Push, Pull, and Friction.