Unit 1
where can you find every element?
the periodic table
what is an unbalanced force
when the forces are different
what are the 4 inner planets?
Mercury, Venus, Earth, Mars
In certain ecosystems, the primary producers represent 100,000 kcal of energy. Assuming a transfer of 10% between trophic levels, how much energy is available to the fourth trophic level?
100
what are the organs of the nervous system?
brain, spine, nerves
what is a chemical symbol?
the letter or letters that represent an element
what two things happen to an object if the forces are balanced
stay still or continue moving at a constant
what 2 things control gravity and how?
distance and mass
how can an animal get more energy from its prey?
eat from a different trophic level
what are the levels of organization from smallest to largest? (there's 5)
cell, tissue, organ, organ system, organism
how many molecules are in C3H12O6
21
what is displacement
straight line from start to finish
what are 3 ways we prove the earth has changes?
fossils, layers of the earth, tectonic plates
what is the 3rd trophic level?
secondary consumer
Veins and arteries are important to the circulatory system. What is the difference between the two?
Arteries carry blood away from the heart, veins carry the blood back to the heart.
list 3 ways to identify a chemical change
color change, create something new, burning
a car drives for 20 min and goes 45 miles east what is their speed?
2.25
what tectonic plate interaction creates sea floor or trenches
divergent
what kind of consumer receives the most energy?
herbivores
what organs make up the respiratory system?
trachea, lungs, diaphragm
what 3 factors affect rate of dissolution
agitation, temperature, surface area
a car drives 3 miles north for 30 min, 5 miles east for an hour, 6 miles south in 2 hours and then 5 miles west in 15 min, what is their displacement?
3 miles south
if the producer creates 16397 cal of energy how much does the tertiary consumers receive
16.397 cal
what is assimilation?
when plants or animals take in nitrogen
Most body systems provide a variety of functions. The functions of some systems even overlap. For example, one system protects the body, regulates body temperature, removes wastes from the body, and senses external stimuli. Which body system carries out all of these functions?
integumentary