Technology and Engineering
A student is designing a water filter. What must the do BEFORE building anything? Think of the engineering design process
Define problem, research, sketch it out, and plan it
What are the three states of matter?
Solid, liquid, and gas
What do plants need to survive?
air, oxygen, and water
How does water move from oceans to clouds?
Evaporation
What force keeps planets in orbit?
Gravity
Why do engineers make prototypes?
To test ideas before the final design
What is mass?
The amount of matter in an object
What process do plants use to get energy?
Photosynthesis
What percentage of Earth's water is fresh water?
about 3%
What is the center of our solar system?
The sun
Why do engineers test their designs?
To see what works and improve it.
Is melting butter a physical or chemical change?
Physical change, it is still butter
What happens to energy as it moves through a food chain?
It decreases
What are the four earth systems?
Atmosphere, Geosphere, Hydrosphere, Biosphere
Why do we see different constellations during the year?
Earth orbits the Sun
What is a constraint?
Limits like materials, time, or cost.
Sugar dissolves in water. Where did the sugar go?
It is still there, just spread out in the water.
Dead matter would build up and nutrients wouldn't recycle.
How do Earth's systems interact during a storm?
Air, water, and land all affect each other.
Why do shadows change length during the day?
The sun's position changes in the sky because we are orbiting the sun and rotating
Two bridge designs are tested. One holds more weight than the other. What should the student do next?
Analyze why it worked better and improve the design.
Why is burning wood considered a chemical reation?
A new substance is form like ash and gas.
What is the role of a producer?
To produce energy
Give an example of how two Earth systems interact?
Atmosphere + Hydrosphere = Hurricane
Explain what a light year is.
A unit of distance that represents how far light travels in one year (about 5.88 trillion miles).