Scientific Investigations
If I give plants different liquids, then they will grow at different rates.
In the hypothesis above, what is the independent variable?
Different Liquids
MRSTEC stands for 6 types of energy discussed this year. List all 6 energy types.
Mechanical, radiant, sound, thermal, electrical, chemical
Barometer, anemometer, and hygrometer are all weather instruments. Which one measures humidity?
Hygrometer
Our solar system has two types of planets. What are these types and which planets are classified as them?
Terrestrial-Mercury, venus, earth, mars
Gas giants-Jupiter, saturn, uranus, neptune
A hair dryer is plugged into the wall. When it is turned on, what energy transformation occurs. Name the initial energy type and the final energy type.
Electrical to thermal (some sound and mechanical too)
If I give plants different liquids, then they will grow at different rates.
In the hypothesis above, what is the dependent variable?
Growth rate
What are resources that can be used over and over again? Give two examples also.
Renewable. Wind, hydropower, solar, geothermal, biomass
Our atmosphere is mostly composed of which gas? List any others you know.
Nitrogen. Also oxygen and others
The term for Earth spinning on its axis, causing day and night.
Rotation
What energy transformation happens with hydropower?
Constants: plant type, container, soil, sunlight, amount of liquid given
What are resources that take millions of year to form and cannot be replaced easily?
Nonrenewable resources: oil, coal, natural gas, nuclear ("clean")
Inverse. When one goes up, the other goes down.
The term for Earth orbiting the Sun. This also causes the seasons and lasts a year.
Revolution
When a deer eats grass, what kind of energy transformation is occuring?
Mechanical to chemical
What does independent variable mean?
Independent I change. The one variable in the experiment that I change.
What is the term for the amount of energy the Earth absorbs and reflects?
Earth's energy budget
One air mass pushing another air mass of a different temperature out of the way is called what?
List the planets in our solar system in order from distance of the sun.
Mercury, venus, earth, mars, jupiter, saturn, uranus, and neptune
The sun gives us what energy types?
Radiant and thermal
What does dependent variable mean?
Dependent data. Measurable data.
What are the three types of thermal energy and how are they shown?
Conduction- through touch. Radiation- through the air. Convection-through spiral currents of differing wind or water temperatures.
List the 5 layers of the atmosphere in order from the surface up to space.
Troposphere, stratosphere, mesosphere, thermosphere, and exosphere
The moon and the sun are responsible for what on Earth's surface?
Think of an energy transformation that starts with chemical energy and transforms into something else. Write down you example.
Answers vary. Chemical energy from food to mechanical energy to run. Chemical energy from batteries to sound energy for an alarm clock. Etc.