Physical Science
Water, aluminum, redwood trees, and valley quail all have this in common.
they are all made of atoms
The role of the esophagus is to do this.
carry food from the mouth to the stomach.
This location on Earth receives the most direct sunlight.
the equator.
Electricity flows along more than one pathway. What kind of circuit is this?
Parallel circuit
The steps scientists use to solve a problem
The scientific method
This material will allow electricity to flow between a battery and a light bulb.
copper wire.
Oxygen-rich blood goes here after leaving the lungs.
the heart.
This process is responsible for changing liquid water into water vapor.
evaporation.
Electrical energy is converted to these two types of energy when electric current flows through the metal filament of a light bulb.
heat and light energy.
Scientists do this to make sure the results from their experiment are valid.
repeat their experiment
This property of salt is important when making ice cream.
it lowers the freezing point of water.
This is broken down in the body to release energy.
sugar.
What keeps planets in orbit around the Sun?
gravity
This is a harmful waste that leaves the blood and travels through the lungs before leaving the body.
carbon dioxide.
In science, data that can be reproduced repeatedly is known as what?
evidence
The atomic number tells us this.
how many protons are in the element.
This is produced when sugar is digested in an animal cell.
carbon dioxide (CO2).
Above a continent, a warm air mass slowly passes over a cold air mass. As the warm air begins to cool, clouds form. What will most likely happen next?
rain will fall.
Decomposers are important in the food chain for this reason.
they break down dead organisms and recycle nutrients into the soil.
Parts of the experiment that are changed
Variables
Energy caused by the movement of electrons
Electrical energy
The life cycle of a grasshopper is known as this type of life cycle (egg, nymph, adult).
Incomplete metamorphosis
Natural sources or processes that are constantly replenished.
Renewable Resources
The reason for Earth's seasons.
Earth's tilt on its axis
The part of the experiment that uses an IF...THEN statement and is what scientists test.
Hypothesis