7th Grade Starter Quiz. 1/25

What is an example of a biotic factor in an ecosystem.

• Rock

• Sunlight

• Tree

• House

All biomes, except a desert, have populations of interacting species.

• True

• False

An abiotic factor that describes overall weather in an area over a long period of time.

• Weather

• Climate

• Sunny

• Cloudy

Which statement best describes the process of science?

• Scientists are objective and free of prejudice.

• Generally, scientists work independently and discover new ideas without the help of others.

• Scientific ideas evolve or change over time.

• New ideas in science result from planned and well-designed experiments.

Hypothesis and models are constructed to give the best explanation of a set of data. Models and hypothesis based on experimentation and research are

• generally accepted by all scientists who are experts.

• modified if necessary as new data and observations are collected.

• not modified once completed if based on careful experimentation.

• generally only accepted if scientists agree with collected data

What process below releases primarily oxygen into the atmosphere?

• Respiration

• Combustion

• Osmosis

• Photosynthesis

Most of the minerals within an ecosystem are recycled and returned to the environment by the direct activities of organisms known as

• producers.

• consumers.

• scavengers.

• decomposers

Plants transform energy from the sun into

• Nuclear Energy

• Solar Energy

• Chemical Energy

• Mechanical Energy

Which of the following human activities reduces biodiversity?

• Prohibiting hunting in wildlife preserves

• Collecting tissue samples from endangered species in the area

• Planting native grass species to prevent erosion

• Planting one type of tree to replace native forests cut for lumber

What two pieces of equipment would you likely need to use in order to calculate the density of a small rock?

• Graduated cylinder and ruler

• Graduated cylinder and triple beam balance

• Ruler and scale

• Ruler and triple beam balance