WorksheetsScience EOG
Total questions: 15
Worksheet time: 15mins
The chemical equation represents the process of photosynthesis.
Which element in the reaction is unbalanced?
A. carbon
B. hydrogen
C. oxygen
D. sunlight
A group of researchers analyzed the water samples from four polluted lakes (P, Q, R, and S) for the presence of four different substances, as shown in the table.
Which lakes’ water samples exceed only one of the EPA’s maximum permissible levels?
A. Lakes P and Q
B. Lakes Q and S
C. Lakes Q and R
D. Lakes P and S
Examine the diagram of a food web. A small population of eagles is introduced in the food web. The eagles feed on mice and reproduce at high rates. What is the most likely consequence of the introduction of eagles in the food web?
The eagles will coexist with the hawks.
The hawks will prey on grasshoppers.
The eagles will compete with the hawks.
The hawks will establish a mutualistic relationship with mice.
Which actions are physical changes?
P and Q
Q and R
R and S
S and P
In 1911, a small population of 25 reindeer was introduced on Saint Paul Island. The graph shows the increase in the population of reindeer on the island between 1911 and 1940 with four lines (W, X, Y, and Z) that represent the estimated reindeer population by 1950. If the reindeer population overgrazed their food supply in 1940, which line would likely represent the estimated population of reindeer on the island by 1950?
W
X
Y
Z
Which are sources of freshwater on Earth’s surface?
atmosphere, rivers, swamps, soil, and living things
aquifers, atmosphere, estuaries, rivers, and soil
rivers, aquifers, swamps, soil, and oceans
oceans, atmosphere, rivers, soil, and living things
A researcher analyzes the water in a stream and observes that the water contains many snails, crayfish, shrimp, caddisflies, mayflies, and stoneflies. These organisms are invertebrates that are used as bioindicators for bodies of water.
What can be concluded correctly about the water in the stream?
A. The presence of any living organisms indicates the water is safe to drink.
B. The presence of many different types of invertebrates indicates the water is polluted.
C. The presence of insects indicates that decomposition is taking place in the water.
D. The presence of a variety of invertebrates indicates that the water is suitable for aquatic life.
The diagrams below represent different ways heat is transferred. The arrows in the diagrams show the direction of heat transfer.
Which table shows the primary way heat is transferred in each diagram?
Which of the following statements is true?
Balanced forces cause a change in motion.
Unbalanced forces cause a change in motion.
Forces do not effect the change in motion.
Gravitational potential energy depends on the ________ and ________ of the object.
Height and mass
Friction and movement
Mass and Movement
Height and Friction
A substance made up of two or more elements that have been chemically combined
mixture
substance
compound
ion
Is hammering wood together to build a house a chemical or physical change?
chemical
physical
What is the primary gas responsible for the greenhouse effect on Earth?
A) Oxygen
B) Nitrogen
C) Carbon Dioxide
D) Hydrogen
Which of the following is an example of a chemical change?
A) Melting ice
B) Burning wood
C) Dissolving sugar in water
D) Breaking glass
A scientist is conducting an experiment to test the effect of sunlight on plant growth. What is the independent variable in this experiment?
A) Amount of water given to the plants
B) Type of soil used
C) Amount of sunlight received
D) Growth of the plants
