6th Grade
List two ways that seeds can spread.
1. Animals eating the seeds and passing them through their waste.
2. Wind
3. Getting caught on animals fur
What has a positive charge? A proton, neutron, or electron?
A proton
Where are the oldest fossils in rock layers?
The fossils in the deepest rock layers.
What are offspring?
Children, kids
What is a hypothesis?
Educated guess to guide an experiment. Written before an experiment.
As carbon dioxide in the atmosphere increases, the global average temperature.....
Increases
If a teacher were to drop a piece of Mg in HCl, and gas bubbles were to come out of the solution, would this be an example of a chemical or physical reaction?
Chemical
What is the difference between mitosis and meiosis?
Mitosis is the replication of cells, meiosis is the replication of cells involved in making new life.
What is precipitation?
Rain, snow, hail
When interpreting data, what should you look at when trying to understand the graph?
The title, x axis, y axis
Sense receptors respond to stimuli by sending messages to the brain to either produce immediate changes in behavior or store as memories.
Would reading a book, learning a song, or hearing a loud noise result in an immediate change in behavior?
Hearing a loud noise
If you were to look at a diagram of ice vs. water vapor, what would the molecules look like in both?
Ice would have molecules very close together, water vapor would have molecules very far apart and moving fast.
A cart is on a rollercoaster. At what point would the rollercoaster cart have the most kinetic energy, the highest or lowest point? Why?
What do biotic and abiotic mean?
A scientist is studying plant growth. They change the amount of water they add to plant, and measure the plant growth.
What is the dependent variable in this experiment? Why?
Plant growth. Dependent variables is what is measured.
Students in a class are studying different organ systems in the human body. One students claims that the organs in the digestive system all have the same type of cells. Another disagrees.
What would be the best way to find out?
A. Comparing the shapes and sizes of the organs
B. Using a microscope to observe the cells of the organs.
C. Studying figures showing the chromosomes in each organ
B. Using a microscope to observe the cells of the organs
A teacher adds one chemical to another chemical solution. The solution remains colorless, but the chemical added sinks to the bottom. Is this a physical or chemical reaction?
Physical
If a box is sliding on a ramp, what force would be between the two objects?
Friction
What is the numerical value for gravity?
-9.8 m/s^2
Two students are trying to map the electric field of a positively charged metal rod.
To determine the electric field lines, they should
A. Record the speed of the ball just after it begins to move
B. Release the ball and draw an arrow in the direction the ball moves
C. Roll the ball toward the metal rod and record the time to reach the rod.
B. Release the ball and draw an arrow in the direction the ball moves
Bill has a glass of lemonade with ice. How does the ice cool off the lemonade? (I'm looking for a very specific word to be in your answer)
The heat from the lemonade transfers to the ice. HOT TO COLD
What is the importance of animal grazing and wildfires in a tallgrass prairie ecosystem?
Animals spread seeds, prevents grass from becoming too large and losing nutrients, wildfires remove dead plants.
Two birds have children. 3 of the 4 birds are blue, and one bird is orange. These are their genotypes:
Aa, AA, aa, Aa
Is blue or orange the dominant genotype?
Blue.
What does heterozygous mean?
Heterozygous is when there are two different types of a gene, for example Aa
Scientists want to develop a cancer fighting drug with the goal of maintaining biodiversity. Which method should they use?
Method 1: Ingredients used to develop the drug are found in tree bark. Removing ingredients from the bark kills the trees. Has been used since 1960.
Method 2: Ingredients used to develop the drug are created by scientists. Chemical reactions are required to make it. Has been used since 1990.
Method 2, maintains biodiversity by not killing trees