A ______________________ is the variable or factor that responds or reacts to what has been done to it.

_______________________ is an observation using your senses.

____________________ is an observation using exact measurement with numbers.

____________________ is the amount of space an object takes up.

____________________ is the amount of matter an object contains.

______________________ is used for measuring small objects.

__________________ is the unit used to measure long distances.

A(n)___________________ is made using your five senses.

Graduated cylinders are generally used to measure volume and are read at eye level at the bottom of the ________________.

The part of an atom that has a negative charge is __________________.

The part of an atom with no charge is a _________________________.

The part of an atom with a positive charge is a _____________________.

What major element is NOT found in living things?

What does number 2 represent in the atom?

What element has the chemical symbol "N"?

In order for a ___________________ to form, a chemical reaction must take place.

When a substance changes completely and a new substance is formed is called a __________________.

What are the three main states of matter?

A substance that cannot be broken down by chemical or physical means is a(n)__________________.

A ___________________ is a change to the outward appearance of an object. It is still the same object.

The compound CO₂ is made up of what atoms?

To identify the atom in the picture, what do you need to count?

Reactions with acids in groundwater, acid in living things, acid precipitation and oxidation are all types of ____________________________.

A type of physical weathering that breaks down rock by the expansion of ice as water freezes and thaws in small cracks.

Rocks that undergo _____________ weathering crumble easier.

The earth's crust is made up of what three elements?

Which earth system includes all living things?

Which earth system includes all the gases that surround the earth?

Which earth system includes all the earth or land?

Which earth system includes all liquid water?

Which earth system includes all frozen water?

Plant/Animal Action, Temperature change (ice wedging), pressure changes, gravity, wind and water are all examples of _________________.

The atmosphere is divided into four layers. Name the order of the layers starting with the layer closest to the earth.

Which layer of the atmosphere has most of the atmosphere's mass and is where all the earth's weather occurs?

The ozone layer is found in which layer?

Ozone is a harmful pollutant that is created when exhaust pollution reacts with __________________.

What percentage of the Earth's atmosphere is made up of oxygen?

What percentage of the earth's atmosphere is made up of nitrogen?

The process by which gases hold heat in the atmosphere is

The ________________________ in the atmosphere helps protect Earth from harmful solar radiation.

Heat given off by electromagnetic waves through indirect touch is

The movement of matter in a circular motion (remember warm air rises and cold air sinks) is called ___________________.

Transfer of energy from one object to another object through direct touch is called ___________________.

Energy from the sun travels to the earth through ______________.

What major element is NOT found in the Earth's crust?

A __________________ measures the air pressure.

A __________________ measure humidity.

A ________________________ measures relative humidity.

The force that air exerts on all objects is called ________________.

As altitude increases, air pressure ____________________.

_________________form from small condensed water particles.

Two major requirements or a hurricane to form are moisture and _______________.

Large bodies of water help to keep nearby climates from being too hot or too cold because ______________________.

Two locations located on the same isobar (circle on weather map) experience ________________________.

Clouds that form very near the earth's surface is ____________.

These clouds produce severe storms and are often referred to as thunderheads.

These clouds are found at very high altitudes and are made of ice crystals.

When ______________________ condenses, it forms clouds.

Fog is simply a ______________ cloud very near the earth's surface.

The largest watershed in Virginia is the ______________________.

The Rappahannock River, Potomac River, James River and the York River all flow into which watershed?

Most of the Earth's fresh water is found ____________________.

The land that water flows across or through on its way to a body of water is called a _________________.

What do you call a place where fresh water and salt meet?

A stream or river that runs into another stream or river is called a ___________________.

A ____________________ (or ridgeline) separates one watershed from another watershed.

Wetlands help control runoff by ___________________________.

Abiotic means _______________.

The only substance on Earth that is commonly found in all 3 states is ________________.

_____________________ is known as the universal solvent because of its ability to dissolve many substances.

Water quality is measured by checking pH levels, temperature, _____________________ and _______________________.

__________________ energy is stored energy.

___________________ energy is the energy of motion.

When energy is transferred from one type of energy to another type is called ________________.

The leaves of a plant absorb the sun's energy and convert that energy into a sugar molecule. This is an example of

The three fossil fuels are coal, natural gas, and ______________.

Coal, Petroleum (oil), natural gas, and nuclear (uranium) energy are ______________________ resources.

Wind, water, solar, biomass, and geothermal are _________________ resources.

___________ is a direct result of burning fossil fuels.

What is a disadvantage of solar energy?

____________________ energy that uses heat from deep underground and is used to create steam that moves turbines and then powers generators.

The best way to conserve land is _______________________.

What order does natural gas and petroleum form?

1.Sea plants dies and are buried by layers of sand and silt. 2.Heat and pressure from the Earth turn the sea plants into natural gas and petroleum.

3.Sea plants absorb and store energy.

4.The remains of sea plants are buried deeper in the Earth.

When the Northern Hemisphere of Earth is tilted towards the sun, it is experiencing _______________________.

When the Northern Hemisphere is tilted away from the sun, it is experiencing ______________________.

_________________ believed that the Earth was at the center of the universe (geocentric) and everything revolved around the Earth.

__________________ discovered that the planets revolved around the sun (heliocentric)..

The moon orbits the earth because of the ___________________ attraction between the moon and the earth.

__________________ tides occur when the sun, moon, and earth form a straight line and experience extremely high tides.

__________________ tides occur when the sun, earth, and moon form a 90^o angle and experience extremely low tides.

What causes tides?

______________________is the main factor that causes the planets to revolve around the sun.

The asteroid belt separates the first __________ planets (terrestrial planets) from the other planets (gas giants).

______________________ is the spinning of a body on its axis.

The motion of a body that travels around another body is called _______________________.

Pluto is classified as a dwarf planet because _________.

_______________ is known as the red planet.

_________________ is the largest planet.

The ringed planet is ________________.

What is the correct order of the planets beginning closest to the sun?