LG 22 Science Vocab Pre-Quiz

Acceleration

• the ability to make a car go faster by hitting the gas

• the rate at which the speed or the direction of motion of an object changes over time

• the speed of an object

• an object decreasing in speed as it goes up a hill

Force

• the push or pull that acts on an object

• an invisible power used in the Star Wars movies

• making a person do something they do not want to do

• all the above

Friction

• a type of contact force

• acts against movement when two objects touch each other

• makes it harder for one surface to move past another

• all the above

Gravity

• a force that acts between any two objects that pulls them toward one another

• Earth's pull on the moon

• the Sun's pull on Earth

• all the above

Magnetism

• is a non-contact force

• can push and pull (attract and repel) objects without touching them

• requires magnetic objects such as iron, nickel, and cobalt

• all the above

Non-Contact Forces

• forces that do not need to touch each other to make objects move

• keeping far away from an object by choice

• social distancing

• the attraction between two magnets pulling towards one another

Contact Forces

• when a person picks up the other line of a phone call

• all the above

• a force that causes a change when two objects touch

• when two soccer players run into each other on the field