Seventh grade science IXL

Seventh grade science

Here is a list of science skills students learn in seventh grade! These skills are organized into categories, and you can move your mouse over any skill name to preview the skill. To start practicing, just click on any link. IXL will track your score, and you will get immediate feedback as you practice!

Scientific method

1. A.1Identify steps of the scientific method

Designing experiments

1. B.1Identify control and experimental groups
2. B.2Identify independent and dependent variables
3. B.3Identify the experimental question
4. B.4Identify questions that can be investigated with a set of materials
5. B.5Understand an experimental protocol about plant growth
6. B.6Understand an experimental protocol about diffusion
7. B.7Understand an experimental protocol about evaporation

Engineering practices

1. C.1Identify parts of the engineering-design process
2. C.2Evaluate tests of engineering-design solutions
3. C.3Use data from tests to compare engineering-design solutions
4. C.4Explore the engineering-design process: going to the Moon!

Density

1. D.1Calculate density, mass, and volume

Atoms and molecules

1. E.1What are atoms and chemical elements?
2. E.2How are substances represented by chemical formulas and models?
3. E.3Identify chemical formulas for ball-and-stick models
4. E.4Describe the atomic composition of molecules
5. E.5Classify elementary substances and compounds using chemical formulas
6. E.6Classify elementary substances and compounds using models

Chemical reactions

1. F.1Identify reactants and products
2. F.2Count atoms and molecules in chemical reactions
3. F.3Calculate amounts of reactants or products in chemical reactions
4. F.4Describe energy changes in chemical reactions
5. F.5Compare physical and chemical changes
6. F.6Explore chemical structure and properties: soapmaking
7. F.7Explore chemical structure and properties: food flavors

Velocity, acceleration, and forces

1. G.1Calculate velocity from time and distance
2. G.2Calculate distance from velocity and time
3. G.3Calculate time from velocity and distance
4. G.4Calculate velocity, distance, and time I
5. G.5Calculate velocity, distance, and time II
6. G.6Identify whether objects are accelerating
7. G.7How does mass affect force and acceleration?
8. G.8Predict forces using Newton's third law
9. G.9Balanced and unbalanced forces

Kinetic and potential energy

1. H.1Identify changes in gravitational potential energy
2. H.2Use tables and graphs to identify patterns about kinetic energy
3. H.3Explore energy transformations: roller coaster ride
4. H.4Explore energy transformations: bike ride

Thermal energy

1. I.1Predict heat flow and temperature changes
2. I.2Compare thermal energy transfers
   
   
   
   
   
   

 

Particle motion and energy

1. J.1How does particle motion affect temperature?
2. J.2Particle motion and changes of state
3. J.3How does particle motion affect gas pressure?
4. J.4Identify how particle motion affects temperature and pressure

Waves

1. K.1Compare amplitudes, wavelengths, and frequencies of waves
2. K.2Compare energy of waves

Solutions

1. L.1Compare concentrations of solutions
2. L.2Diffusion across membranes

Classification and scientific names

1. M.1Identify common and scientific names
2. M.2Origins of scientific names
3. M.3Use scientific names to classify organisms

Biochemistry

1. N.1Structure and function: carbohydrates, lipids, proteins, and nucleic acids
2. N.2Understanding the chemistry of cellular respiration

Cells

1. O.1Understanding cells
2. O.2Identify functions of plant cell parts
3. O.3Identify functions of animal cell parts
4. O.4Plant cell diagrams: label parts
5. O.5Animal cell diagrams: label parts
6. O.6Compare cells and cell parts

Anatomy and physiology

1. P.1Organization in the human body: the heart and the circulatory system
2. P.2Science literacy: how does the nervous system produce phantom pain?

Genes to traits

1. Q.1Inherited and acquired traits: use evidence to support a statement
2. Q.2Genetics vocabulary: genotype and phenotype
3. Q.3Genetics vocabulary: dominant and recessive
4. Q.4Genetic variation in sexual reproduction
5. Q.5Complete and interpret Punnett squares
6. Q.6Use Punnett squares to calculate ratios of offspring types
7. Q.7Use Punnett squares to calculate probabilities of offspring types
8. Q.8Genes, proteins, and traits: understanding the genetic code
9. Q.9Describe the effects of gene mutations on organisms
10. Q.10How do genes and the environment affect plant growth?

Adaptations and natural selection

1. R.1How can animal behaviors affect reproductive success? Identify evidence to support a claim
2. R.2Introduction to natural selection
3. R.3Calculate the percentages of traits in a population
4. R.4Calculate the averages of traits in a population
5. R.5Construct explanations of natural selection

Fossils

1. S.1Compare ages of fossils in a rock sequence

Plant reproduction

1. T.1Angiosperm and conifer life cycles
2. T.2Moss and fern life cycles

 

Photosynthesis

1. U.1How do plants use and change energy?
2. U.2Identify the photosynthetic organism

Ecosystems

1. V.1Describe populations, communities, and ecosystems
2. V.2Identify ecosystems
3. V.3Describe ecosystems

Ecological interactions

1. W.1How does matter move in food chains?
2. W.2Interpret food webs I
3. W.3Interpret food webs II
4. W.4Classify symbiotic relationships
5. W.5Investigate primary succession on a volcanic island

Conservation

1. X.1Coral reef biodiversity and human uses: explore a problem
2. X.2Coral reef biodiversity and human uses: evaluate solutions

Natural resources and human impacts

1. Y.1Evaluate claims about natural resource use: groundwater
2. Y.2Evaluate claims about natural resource use: fossil fuels

Rocks and minerals

1. Z.1Identify rocks and minerals
2. Z.2Classify rocks as igneous, sedimentary, or metamorphic
3. Z.3Label parts of rock cycle diagrams
4. Z.4Select parts of rock cycle diagrams

Plate tectonics

1. AA.1Label Earth layers
2. AA.2Label Earth features at tectonic plate boundaries
3. AA.3Describe tectonic plate boundaries around the world

Topographic maps

1. BB.1Select parts of a topographic map

Water cycle

1. CC.1Label parts of water cycle diagrams
2. CC.2Select parts of water cycle diagrams

Weather and climate

1. DD.1Use data to describe climates
2. DD.2Explore air masses
3. DD.3Identify and compare air masses
4. DD.4How do air masses form?

Climate change

1. EE.1The carbon cycle
2. EE.2The greenhouse effect
3. EE.3Use data to explain climate change

Natural hazards

1. FF.1Analyze natural hazard maps

Astronomy

1. GG.1Analyze models of the Earth-Sun-Moon system
2. GG.2Identify phases of the Moon
3. GG.3What causes the seasons on Earth?
4. GG.4Analyze data to compare properties of planets

Units and measurement

1. HH.1Choose customary units of distance, mass, and volume
2. HH.2Choose metric units of distance, mass, and volume
3. HH.3Estimate temperatures
4. HH.4Abbreviate length, speed, and acceleration units
5. HH.5Abbreviate temperature, mass, and volume units
6. HH.6Abbreviate force, energy, and electricity units