Chemical Reactions
This is the smallest unit of an element that takes part in a chemical reaction.
What is an atom?
The force that pulls objects toward Earth.
What is gravity?
The needle of a compass always points toward this pole.
What is the magnetic north pole?
The speed of light is fastest in this medium.
What is a vacuum?
Molten rock beneath Earth’s surface is called ____.
What is magma?
When iron reacts with oxygen and water, it forms this reddish-brown substance.
What is rust?
An object in motion stays in motion unless acted on by a force. Which law is this?
What is Newton’s First Law?
Opposite poles of magnets do this when brought together.
What is attract?
Light bouncing off a surface is called ____.
What is reflection?
Igneous rock is formed when magma or lava does this.
What is cool and solidifies?
In a chemical reaction, the starting substances are called ____.
What are reactants?
Speed in a given direction is called ____.
What is velocity?
Electric current in a wire creates this around the wire.
What is a magnetic field?
A prism separates white light into colors through ____.
What is refraction?
Rocks broken down into smaller pieces is called ____.
What is weathering?
This type of reaction releases heat, like burning wood.
What is an exothermic reaction?
A roller coaster going down a hill increases its ____.
What is acceleration?
This device uses electromagnets to convert electrical energy into mechanical energy.
What is a motor?
This wave behavior makes a straw look “bent” in water.
What is refraction?
Heat and pressure can transform sedimentary rock into this type of rock.
What is metamorphic rock?
In photosynthesis, plants use carbon dioxide and water to make this sugar.
What is glucose?
The product of mass and velocity is ____.
What is momentum?
Earth’s magnetic field protects us from harmful particles from the Sun called ____.
What are solar wind or charged particles?
Humans can only see a small part of the electromagnetic spectrum called ____.
What is visible light?
The continuous process of rock changing from one type to another is called ____.
What is the rock cycle?