Types of Scientists
What do astronomers study?
objects beyond Earth's atmosphere, like planets, stars, galaxies
What is the scientific method?
A series of problem-solving procedures that help scientists with their experiments and investigations
What are the four Earth systems?
Hydrosphere
Biosphere
Atmosphere
Define Le Système International d’Unités (SI units)?
Standard system of units
modern version of the metric system
What is the SI unit for length?
Meters (m)
What do meteorologists study?
forecast the weather and learn changes in weather
What is the control in an experiment?
The factor that is unchanged to compare with what you are testing.
What three parts make up the geosphere?
crust, mantle, core
A testable explanation or educated guess that can be tested
What is the standard SI unit for temperature?
Kelvin (K)
What do geologists study
rocks and fossils
glacial movements
Earth's history to examine how forces have changed our planet
What is the difference between an investigation and an experimentation?
An experimentation has a control, an investigation doesn't.
What gases make up 99% of the atmosphere?
Nitrogen and Oxygen
What is the scientific notation?
a shorthand expression for very large numbers or very small numbers
Newton (N)
How does an oceanographer study the ocean?
They dive into the ocean to gather data.
What is the difference between the independent variable and the dependent variable?
An independent variable is the factor that is being changed by the experimenter. The dependent variable is affected by the change.
What is the cryosphere?
the frozen portion of water on Earth
What is mass?
the amount of matter in an object.
What is the SI unit for mass?
Kilogram (kg)
What is something that environmental scientists study?
the effects of pollution
alternative energy sources
impacts humans have on the atmosphere
Why would a scientist form a new hypothesis?
The original hypothesis was not supported after the experiment was conducted.
What are the five areas of Earth Science?
Astronomy
Environmental Science
Oceanography
Geology
Meteorology
Define environmental science.
the study of interactions between organisms and their surroundings
Mass depends on the number of atoms and the types of atoms, and the mass of an object stays the same. Weight is the measure of gravitational force exerted on an object and can vary.