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
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.
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.
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.