6th - Science Chapter 2 Notes Flashcards
What is the force that every object exerts on every other object because of their mass?
Gravity
What are the Earth’s four systems?
- Atmosphere
- Hydrosphere
- Geosphere
- Biosphere
The more mass an object has the ____________ the gravitational force.
Stronger
The _____________ together two objects are the stronger the gravitational force.
Closer
What is Newton’s First Law of Motion called?
The Law of Inertia
The statement that says “A moving object will continue to move in a straight line at a constant speed unless an unbalanced force acts on it” describes what?
The Law of Inertia
If an object is at rest, it stays at rest unless what?
An unbalanced force acts on it.
What is the tendency of an object to resist any change in its motion?
Inertia
What is “an object’s acceleration is i the same direction as the net force on the object and is equal to the net force exerted on it divided by its mass?”
Newton’s Second Law of Motion
The harder you throw the ball (the greater the force), the greater its acceleration. The larger the mass of the ball (with force staying the same), the greater the acceleration. What law is this an example of?
Newton’s Second Law of Motion
When one object exerts a force on a second object, the second object exerts a force on the first that is equal in strength and opposite in direction. Which law is this?
Newton’s Third Law of Motion
To every action force there is what?
An equal and opposite reaction force.
What is the amount of mass in a material per unit volume?
Density = mass/volume
What do least dense materials do?
Remain on the surface
What do most dense materials do?
Sink to the bottom
