The energy stored in and released from the nucleus of an atom is called ___________.

The particles of _______ are tightly packed, but are far enough apart to slide over one another. They have an indefinite shape and a definite volume.

________ is the ability to be hammered or rolled into sheets.

________ is the transfer of energy by electromagnetic waves.

A(n) _______ is a substance that consists of just one type of atom.

___________ is the increase in volume of a material due to a temperature increase.

In the periodic table, the elements in group 1 are called ________, with the exception of hydrogen.

_________ is energy due to motion.

Particles of _______ are very far apart and move freely. They have an indefinite shape and an indefinite volume.

It is the tilt of Earth’s rotation axis, combined within Earth’s motion around the Sun, that causes __________.

The movement of thermal energy from a region of higher temperature to a region of lower temperature is called ________.

In the periodic table, the elements in group 2 on the periodic table are called ________.

Earth makes one complete revolution around the Sun every ___________.

In _________ plants, falling water from rivers and dams is channeled through a turbine.

The __________ of an element is the number of protons in the atom.

The outer planets are ________.

____________ plants are built where thermal energy from Earth is near Earth’s surface.

The sum of the potential energy and the kinetic energy in a system is _________.

One complete rotation of Earth takes about _________.

In the periodic table, the elements in groups 3-12 are called _________.

Which of the following is a renewable energy resource? Check all that apply.

Which of the following is a renewable energy resource? Check all that apply.

Earth's revolution causes the seasons.

_______ have a positive charge.

An ___________ is any human-made object placed in orbit around a body in space.

Wood, plants, and even manure and garbage are considered _________.

A _________ is a warm spring that sometimes ejects a jet of liquid water vapor into the air.

A ________ is a substance containing atoms of two or more different elements chemically bonded together.

_________ refers to a class of chemical compounds in living organisms that are based on carbon.

A ________ is a disturbance that transfers energy from one place to another without transferring matter.

A lunar cycle lasts ________.

An element in group 17 of the periodic table is called a ________.

Biology is the study of the origin, development, distribution, and future of life in the universe.

Fossil fuels are renewable energy resources–an energy resource that is available in limited amounts or that is used faster than it can be replaced in nature.

As the Earth rotates on its axis, it revolves around the Sun.

________ is the mass per unit volume of a substance.

The Law of Conservation of Energy says that energy cannot be transformed from one form to another, but it can be created or destroyed.

The inner planets are __________.

The path an object follows as it moves around another object is a(n) _________.

Earth’s atmosphere is like a blanket around Earth.

________ is the only planet that can support life at this time.

A spinning motion is called _________.

The line on which an object rotates is the rotation ________.

A ________ is a vehicle propelled by the exhaust made from burning fuel.

______ is the nearest star to Earth.

A ___________ is an uncrewed vehicle that travels to and obtains information about objects in space.

The Sun is made of ________.

The Earth orbits the Sun because of ____________.

A _________ is a day when Earth’s rotation axis is the most toward or away from the Sun.