Science 1
Give an example of a scientific model.
A stream table.
What are 3 ways we can limit our water usage?
Answers may vary.
What is the hydrologic cycle?
The water cycle.
A process where natural forces like water, wind, ice, and gravity wear away rocks and soil. All these materials are called sediments.
What is erosion?
______________ is what occurs when rain is not absorbed by the ground on which it falls and so then flows downhill.
What is run off?
Describe why scientists use scientific models.
A scientific model is a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly. Models are central to what scientists do, both in their research as well as when communicating their explanations.
Why do we need to limit our water usage?
Answers may vary.
Sing the water cycle song.
Evaporation, (move hands up in a wave)
transpiration, (pretend to hold plant, with other hand make a wave)
condensation, (squeeze hands together)
precipitation, (move hands down and wiggle fingers)
Water moves all around in the hydrologic cycle (move arm in a circle)
________________ is when sediments are dropped off in a different location.
What is deposition?
Give two examples of how erosion can affect the earth.
Answers vary.
How do slopes of land affect the flow of water and the amount of erosion and deposition that occurs?
Erosion is a natural process which is usually made by rock and soil being loosened from the earth's surface at one location and moved to another. Erosion changes the landscape by wearing down mountains, filling in valleys, and making rivers appear and disappear. ... Water in its liquid form causes erosion in many ways.
A __________ is one which the researcher holds constant (controls) during an experiment. It is important because it can have an effect on the results.
What is a controlled variable?
The thing that is changed on purpose in an experiment is called the __________________ .
What is a manipulated variable?
Define evaporation.
The process of turning liquid into vapor.
The process where plants absorb water through the roots and then give off water vapor through pores in their leaves.
Transpiration.
The process of turning vapor or gas into a liquid.
Condensation.
Define precipitation.
Rain, snow, sleet, or hail that falls to the ground.
The process of a liquid slowly passing through a filter. (Like how coffee is made)
Percolation.
When water falls from the clouds as rain, snow, hail or sleet and collects in the oceans, rivers, lakes, and streams.
Collection.
The movement of a liquid through or along another material against an opposing force, such as gravity.
Capillary Action.
Define cohesion.
The sticking together of particles of the same substance.
Define adhesion.
The force of attraction between different substances, such as glass and water.
Define surface tension.
The molecules on the surface of the water are not surrounded by similar molecules on all sides, so they're being pulled only by cohesion from other molecules deep inside.
Give an example of a controlled variable.
Answers may vary. Example: temperature.
Who is the headliner for Super Bowl 2019 half time show?
Maroon 5.