Nature of Science
What are explanations of scientific events that may change based on continuous research called?
Scientific Theories
What does the law of conservation of mass state?
Mass is neither created nor destroyed in chemical reactions.
What is the name for the ability of the body to maintain a stable internal environment despite a changing external environment?
Homeostasis
How does the atmosphere protect living organisms?
By trapping and blocking EM radiation as well as keeping temperatures within a range best suited for animal life.
What are the dark, cooler areas on the sun's surface called?
sunspots
What is the difference between repetition and replication?
Repetition is when the original scientist repeats an experiment, replication is when other scientists repeat that experiment.
What type of EM waves have the longest wavelength?
Radio Waves
What are the threadlike structures that contain DNA and are located in the nucleus of a cell called?
Chromosomes
What is the process that causes hotter, less dense material to rise beneath Earth's surface, while colder, more dense material sinks, called?
Convection
Why does Saturn take longer to complete one orbit around the sun than Earth does?
Saturn is farther from the sun.
How are experiments and observations different?
In an experiment, scientists actively manipulate variables.
When you use the brakes on a bike to slow down, what force changes the kinetic energy to heat energy?
Friction
What organ system is responsible for transportation of oxygen, nutrients, and waste products throughout the body.
The circulatory system.
How are igneous rocks formed?
What is the measurement that is equal to the distance from the Sun to the Earth or 150,000,000 km called?
An Astronomical Unit
Data that involves numbers and measurements is better known as ________ data.
Quantitative
What two factors most affect solubility?
Pressure and temperature
What structure in plant cells makes the cells rigid as opposed to animal cells.
Cell wall.
In geology, what is the law of superposition?
In undisturbed rock layers, the youngest layers are at the top and oldest layers are at the bottom.
What are the large clusters of gas and dust in outer space, where stars are "born" called?
Nebulas
What is the difference between a theory and a law?
A theory is an attempt to explain why something happens through research and investigation. A law explains what happens in nature under specific conditions.
What property of substances causes one to float on another?
Density
Why would CO2 (carbon dioxide) levels in the atmosphere increase during fall but decrease during the spring
Plants grow leaves in the spring and lose leaves in the fall.
(more leaves = more photosynthesis)
What is the difference between weathering and erosion?
Weathering is the breaking down of rocks. Erosion is moving of rock, soil and other substances from one place to another.
During nuclear fusion, a star converts one gas into another. What are these two gases?
Hydrogen converted into Helium