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Seventh Grade (Grade 7) Science Questions

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Grade 7 Taxonomy
Taxonomy is the science of classifying living things. Which series places the classification groups in the correct order?
  1. kingdom -> class -> phylum -> order -> genus -> family -> species
  2. kingdom -> phylum -> class -> order -> family -> genus -> species
  3. kingdom -> order -> class -> family -> genus -> phylum -> species
  4. kingdom -> phylum -> order -> class -> genus -> family -> species
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 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 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 Cell Structure and Function
What portion of the endoplasmic reticulum is free of ribosomes?
  1. smooth endoplasmic reticulum
  2. rough endoplasmic reticulum
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 Biochemical Pathways
Plants use sunlight to make food in a process called                .
  1. respiration
  2. photosynthesis
  3. fermentation
  4. mitosis
Grade 7 Atomic Structure
Protons have                   .
  1. negatives charges
  2. no charge
  3. positive charges
  4. no electric charge
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 Earth's Layers
This layer is composed of mostly iron, with some nickel.
  1. The Core
  2. The Mantle
  3. The Crust
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 Cell Structure and Function
What happens after telophase to complete the cell cycle?
  1. meiosis
  2. cytokinesis
  3. mitosis
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 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 Cell Structure and Function
Living things are made up of about 70 percent
  1. oxygen.
  2. carbon dioxide.
  3. minerals.
  4. water.
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 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 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
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