Physics
Which of Newton's Laws is also known as the "Law of Inertia"?
First Law of Newton
Which scientist proposed the "plum pudding" model, with electrons scattered inside a positively charged sphere?
What do we call an object changing position over time?
Motion
What do we call a push or a pull on an object?
Force
What is the name of the force that pulls any two objects with mass toward each other?
Gravity
What is the tendency of an object to resist a change in its motion called?
What three particles make up an atom?
Protons, neutrons and electrons
What do we call the straight-line distance and direction from an object's start point to its end point?
Displacement
What force pulls objects toward the center of the Earth?
Gravity
What do we call the force of gravity pulling on an object?
Weight
Which of Newton's Laws states that for every action there is an equal and opposite reaction?
Third Law of Newton
Which subatomic particle has a negative charge?
What term describes how fast something is moving in a specific direction?
Velocity
What force resists motion between two surfaces that are touching?
Friction
Does an object's mass change if you take it to the Moon?
No, mass stays the same everywhere
What is the unit used to measure force?
Newton (N)
Where in the atom are protons and neutrons found?
Nucleus
What term describes how fast something is moving, without mentioning direction?
Speed
What do we call the amount of matter that makes up an object?
Mass
Which scientist developed the first modern atomic theory, proposing that atoms of the same element are identical?
John Dalton
A soccer ball sitting still on the field stays still until someone kicks it. Which of Newton's Laws explains this?
Law of Inertia (1st Law)
Which ancient Greek philosopher first proposed that matter is made of tiny, indivisible particles called "atomos"?
Democritus
What do we call a change in an object's speed and/or direction over time?
Acceleration
Why does an object weigh less on the Moon than on Earth?
Because the Moon's gravity is weaker
What do we call the pulling force transmitted through a stretched rope, string, or cable?
Tension