Ecosystems
What is a food chain?
a series of organisms dependent on each other for energy
How does friction affect an object’s motion?
Friction affects an object’s motion by slowing it down due to the resistance it applies.
How does a human's respiratory system help it survive?
It brings in oxygen and removes carbon dioxide.
How does a physical change differ from a chemical change?
A physical change doesn’t actually change any of the materials while a chemical changes their composition completely.
What is an example of run-off?
a. Plants releasing water vapor into the air.
b. Raining hard
c. Precipitation traveling to creeks and streams
d. Liquid water turning into water vapor
c. Precipitation traveling to creeks
and streams
What is the difference between biotic and abiotic factors in an ecosystem?
Biotic factors are living and abiotic factors are not living.
Describe the difference between mass and weight.
Mass is the amount of matter in something while weight includes the effect gravity has on that mass.
Which body system has the brain, spinal cord, and nerves?
Name the Word: Transfer of thermal energy from one substance to another.
Heat
Why does the direction of the wind at the beach change at night?
Because water stays warmer than land at night.
Write an example of a food chain with at least 3 organisms.
Answers may vary.
Example: Grass -> Grasshopper -> Bird
What is the equation for speed?
speed = distance ÷ time
A mother with dominant brown eyes and a father with recessive blue eyes have a child. Is it more likely for their child to have brown eyes or blue eyes?
Brown Eyes
What word means the average measurement of the kinetic energy of the molecules in a substance?
What is the difference between Jet Stream and Gulf Stream?
The difference between Jet Stream and Gulf Stream is that the Jet Stream is a band of fast moving winds that moves over the US and Canada while the Gulf Stream is a fast moving water current starting in the Gulf of Mexico and moving up toward England.
What would happen in an ecosystem if the main producer organism was removed?
If the producer was removed, the population of the organism that consumes the producer would start to decrease. The the organism’s population that eats that organism would start to decrease and so on.
A car traveled 240 miles in four hours. How far did the car travel in three hours?
180 miles
Name 3 things you inherited from your parents.
Answers may vary, should include things
like hair color, eye color, ect.
Give an example of conduction.
Answers may vary. One example is the
handle of a pan getting hot while it sits
on the stove.
Explain what happens during the El Nino.
During El Nino, the weather on the West coast of the united states would be warmer and wetter than usual.
How do decomposers help their ecosystem?
Decomposers help by turning dead organisms into nutrients for the soil.
If you’re traveling in a car that suddenly stops, your body continues to move forward because of....
Inertia
Why do siblings look similarly to one another?
Siblings look similar because they receive DNA from the same sets of parents.
Name the Word: Transfer of heat through currents in a liquid or gas in which the warmer molecules rise and cooler molecules sink and create a current.
Convection
Explain what happens during the La Nina.
During La Nina, the western part of the United States would experience cooler, dryer weather than normal.