7th Grade Term 1 Test Review

Label the steps of the scientific method in order.

a

b

c

d

e

f

Purpose

Conclusion

Research

Experiment

Hypothesis

Data Analysis

Label the descriptions that go with each step of the scientific method.

a

b

c

d

e

f

Predict the answer to the problem

Develop a procedure to test hypothesis

What is the problem?

Was your hypothesis correct?

Use outside sources to find more info

Gather, organize, & evaluate data

Tags

NGSS.MS-LS1-5

NGSS.MS-PS1-2

Eagles and grizzly bears live together in the same habitat. There will be competition between the eagles and the grizzly bears only if which of the following is true?

• Laws prevent humans from being able to hunt eagles or grizzly bears.

• Grizzly bears hibernate in the winter while eagles remain active.

• Pesticides in the fish population affect eagles' eggs and decrease their population.

• Both grizzly bears and eagles feed on the same species of salmon.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

An increase in which of the following factors is likely to contribute to competition between two members of the same species living in a certain habitat?

• Annual rainfall

• Available food resources

• Population of the species

• Overall size of the habitat

Tags

NGSS.MS-LS2-1

The population of deer in a certain area is monitored over a period of 6 years. The data is represented in the graph provided. Which of the following is the most likely explanation for the change in population in 2009?

• More insects that pollinate flowering plants move into the habitat.

• Rainfall in the previous spring was higher than the yearly average.

• Wolves, which prey on deer, were being hunted more than usual.

• Humans introduced grazing animals that feed on the same plants as the deer.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A student wants to investigate competition between two organisms. For the investigation, it is important that the student should choose organisms that--

• are both active during the day

• have the same adaptations

• require the same resources

• reproduce at the same rate

Tags

NGSS.MS-LS2-1

Two species of fish live in the same pond. They eat the same kinds of plants. They are eaten by the same water birds. Which of the following would increase competition between these two species of fish?

• Water level in the pond decreases.

• Average habitat temperature increases.

• Population of water birds increases.

• Number of food plants increases.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Match the following

• Competition

• A self-contained living thing

• Ecosystem

• Two or more members of the same species living in the same habitat

• Organism

• Source from which organisms benefit

• Resources

• The specific environment in which an organism lives

• Population

• An interaction between organisms that rely on the same resources

The graph below shows the populations, over several years, for two animals that share a habitat. Foxes are mammals that hunt for food, and grouse are birds, a common prey animal of foxes. According to the data, in which year did the population of foxes show a decrease that is most likely the result of a decrease in the availability of a source of food?

• 2003

• 2005

• 2008

• 2012

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

An increase in the population of an organism would most likely be associated with which of the following?

• An expansion of suitable living space

• An increase in animals that prey on the organism

• A series of severe weather events in the habitat

• A decrease in necessary resources available

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4