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Seventh Grade (Grade 7) Science Questions

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Grade 7 Tectonics
What does the phrase "Ring of Fire" refer to?
  1. a tectonic plate
  2. a type of volcano
  3. a geographic region
  4. a type of plate boundary
Grade 7 Respiration, Digestion, and Excretion
What is the purpose of the respiratory system?
  1. to break down food for energy and nutrients
  2. to facilitate the exchange of oxygen and carbon dioxide
  3. to provide response to stimuli in the world around us
  4. to provide structure and support for the body
Grade 7 Evolution
The process by which all the different kinds of living things have changed over time is
  1. evolution.
  2. parasitism.
  3. biology.
  4. homeostasis.
Grade 7 Microbiology
Structures too small to be easily seen with the naked eye are
  1. heteroscopic.
  2. microscopic.
  3. macroscopic.
  4. endoscopic.
Grade 7 Food Chains and Webs
The many overlapping food chains in an ecosystem make up a(n)
  1. food web.
  2. niche.
  3. energy pyramid.
  4. feeding level.
Grade 7 Cell Structure and Function
What portion of the endoplasmic reticulum is free of ribosomes?
  1. smooth endoplasmic reticulum
  2. rough endoplasmic reticulum
Grade 7 Atomic Structure
Protons have                   .
  1. negatives charges
  2. no charge
  3. positive charges
  4. no electric charge
Grade 7 Biochemical Pathways
Plants use sunlight to make food in a process called                .
  1. respiration
  2. photosynthesis
  3. fermentation
  4. mitosis
Grade 7 Earth's Layers
This layer is composed of mostly iron, with some nickel.
  1. The Core
  2. The Mantle
  3. The Crust
Grade 7 Respiration, Digestion, and Excretion
The wave-like movement that moves food through the digestive system is
  1. chyme.
  2. mechanical digestion.
  3. peristalsis.
  4. chemical digestion.
Grade 7 Cell Structure and Function
What happens after telophase to complete the cell cycle?
  1. meiosis
  2. cytokinesis
  3. mitosis
Grade 7 Cell Structure and Function
Which cell organelle is responsible for controlling the functions of the cell?
  1. mitochondria
  2. nucleus
  3. ribosomes
  4. cytoplasm
Grade 7 Biogeochemical Cycles
Lightning, legumes, and bacteria are a part of the                 .
  1. water cycle
  2. nitrogen cycle
  3. carbon cycle
  4. phosphorus cycle
Grade 7 DNA, RNA, and Genetics
A molecule that contains genetic information and is present in all living cells is
  1. pedigree.
  2. DNA.
  3. nucleus.
  4. heredity.
Grade 7 Properties of Matter
What is the formula for density?
  1. Density = mass/volume
  2. Density = volume/mass
  3. Density = mass x volume
  4. Density = mass x (volume)2
Grade 7 Cell Structure and Function
Living things are made up of about 70 percent
  1. oxygen.
  2. carbon dioxide.
  3. minerals.
  4. water.
Grade 7 Biotic and Abiotic
What do you call the living or once-living parts of the environment, such as the trees, bushes, and lions of the savanna?
  1. abiotic factors
  2. biotic factors
  3. biosphere
  4. ecological factors
Grade 7 Biogeochemical Cycles
Which process is NOT a way that carbon in dead organisms is returned to the carbon cycle?
  1. becoming fossil fuel
  2. combustion
  3. decomposition
  4. photosynthesis
Grade 7 Food Chains and Webs
In an energy pyramid, which level has the most available energy?
  1. producer
  2. 1st-level consumer
  3. 2nd-level consumer
  4. 3rd-level consumer
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