What part of the cell contains DNA and controls most cell activities?
The Nucleus
A graph showing the populations of lemmings and weasels in a given environment over a nine-year period is shown. How many more lemmings are there than weasels during the peak of the lemmings' population?
150
What are the three main types of rocks in the rock cycle?
Igneous, sedimentary, and metamorphic
What force attracts objects with mass toward each other?
Gravity
What are the basic building blocks of all matter?
What is the term for water changing from a liquid to a gas?
Evaporation
What process do cells use to break down glucose and release energy?
Cellular Respiration
The table provides information on population density of mayflies, a kind of insect, in a certain area over a few years.
Which year provides evidence that there was a significant increase in the population of birds that prey on mayflies?
2008
What is responsible for Earth's seasons?
The tilt of Earth's axis as it orbits the sun
The law that states: "For every action, there is an equal yet opposite reaction"?
Newton's Third Law of Motion
What are the three main subatomic particles in an atom?
Protons, neutrons, and electrons
Describe a way in which scientists can determine if a newly discovered object should be classified as living or nonliving.
Examine to see if there is a presence or absence of cells.
What do similar patterns of embryonic development among different species suggest?
The table shows areas where sedimentary rock layers are exposed, as well as the environmental factors that produced the rock layers.
Coal forms in locations where vegetation gets buried quickly, and then altered by heat and pressure over millions of years. Which location is most likely to have coal?
Area B
Satellite photos of the same beach from 2 different years are provided below. The point of sand indicated with an arrow has shifted due to wave action. If similar rates of erosion and deposition occur, where would you expect the point of sand to be located in 2015?
Point Y
Describe how the force between two charged objects changes as the objects move closer to each other.
As two charged objects move closer to each other, the force between the objects increases.
How does adding thermal energy to solid ice affect the molecules in the ice?
Changing from solid to liquid - the particles spread out and move faster
KE is increased
Describe the differences between plant and animal cells.
Plants have cell wall, animal cells do not
Plants that exchange oxygen
small insects/organisms for food
plants for shelter/protection
The graphs show how two factors for a certain region changed over time: the number of predators that prey on mice and number of plants of the type that the mice eat.
Based on the information, which of the following years would the population of mice been the highest?
1998
Describe the position of the Earth, Sun, and Moon during a solar eclipse.
Identify which points have the highest kinetic energy and which have the highest potential energy.
Highest PE - Z
Highest KE - W
What are the 5 indications that a chemical reaction occured?
1. Color change
2. Temperature change
3. Precipitate formation
4. Light formation
5. Gas production
Students conducted an investigation about processes of the water cycle. They used four bowls containing water and salt to represent the ocean and collected data in the table below. Where did the most evaporation occur and why?
Outside in direct sunlight - least amount of water in the bowl.
In a forest, which would be more likely to survive and reproduce: a population of white rabbits or a population of brown rabbits? Explain your reasoning.
A map of average sea surface temperatures over the entire Earth is provided.
Warm water is less dense than cold water. Based on this information and the map provided, where would the sea level rise?
At the equator
Identify which phase is a full moon and which is a new moon.
Full moon = D
New moon = A
Which pair do the spheres exert the greatest electrical force on each other and why?
Pair Y - Greatest charge and closest distance
Does the following atomic model demonstrate the Law of Conservation of Matter? Why or why not?
No!
Reactants - N = 2 , H = 2
Products - N = 1, H = 3
In the diagram of the water cycle below, describe which parts are driven by gravity.
Water to fall from clouds
Water to flow downhill from higher ground to lower ground.
Which fossil would be used as a reference to determine the age of newly discovered fossils? Why?
Fossil A - index fossil
Found in all four columns in the same layer, thus representing a wide geographic distribution.
Students planted 100 seeds in two different plots of land on the same day. Both plots of land measured 10 square meters. They recorded data for one year.
Based on the data, the taller height of the population of plant #2 is most likely the result of _____.
Genetic factors during reproduction.
We would observe a totally dark moon starting to become illuminated when the moon moves between which two phases?
Position X to position Position W
What is the equation used to determine the amount of force exerted on an object (Newton's Second Law)?
F = M x A
Students are designing an experiment to test the law of conservation of mass using the following materials: 10 g baking soda, 30 mL vinegar, an electronic balance, and a resealable plastic bag. Describe the basic procedure the students should follow to model this law.
Measure the mass of all components separately (baking soda, bag, vinegar).
Then mix together to cause the chemical reaction.
Measure the materials again, and it should equal the same mass as it did before the reaction.
This weather map of the US shows the location of four cities and the direction of movement of four air masses. The data table gives the air pressure in the four cities.
Which air mass is demonstrating a flow of air from high to low pressure?
C