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Year 8 in England

7th grade science

Every 7th grade science skill on Eurekami: 39 skills in 14 areas, each with a worked example, free practice that checks answers as you go, and printable worksheets with answer keys.

Mixed 7th grade review

Ten questions from across the year, a quick way to see what is secure and what needs another look.

Plants

Photosynthesis

CCSS NGSS.MS-LS1-6CCSS NGSS.HS-LS1-5England: KS3 Biology: Material cycles and energyEngland: KS4 Combined Science: Photosynthesis

Example

What does chlorophyll do?

  1. Chlorophyll absorbs light energy, which is used to make glucose.
  2. So the answer is: absorbs light energy

Answer: absorbs light energy

Builds on: Plants make food from air and water

Leads to: Xylem, phloem and transpiration, Rate of photosynthesis and limiting factors, Photosynthesis: word and balanced symbol equations

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Ecosystems and food chains

Energy transfer and pyramids

CCSS NGSS.MS-LS2-3CCSS NGSS.HS-LS2-4England: KS3 Biology: Interactions and interdependenciesEngland: KS4 Combined Science: Ecosystems

Example

Producers in a field capture 20000 kJ of energy. About 10% of the energy passes to each next level. How much energy reaches the tertiary consumers, in kJ?

  1. 20000 ÷ 1000 = 20
  2. So the answer is: 20 kJ

Answer: 20 kJ

Builds on: Food webs and interdependence

Leads to: The carbon cycle, Calculate energy transfer efficiency between trophic levels

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States of matter

Density

CCSS NGSS.MS-PS1-2CCSS NGSS.5-PS1-3England: KS3 Physics: MatterEngland: KS4 Combined Science: Particle model of matter

Example

A block has a mass of 27 g and a volume of 10 cm³. What is its density, in g/cm³?

  1. density = mass ÷ volume
  2. 27 ÷ 10 = 2.7
  3. So the answer is: 2.7 g/cm³

Answer: 2.7 g/cm³

Builds on: The particle model

Leads to: Find density using water displacement

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Melting and boiling points

CCSS NGSS.MS-PS1-4England: KS3 Chemistry: The particulate nature of matterEngland: KS4 Combined Science: Particle model of matter

Example

Nitrogen melts at −210 °C and boils at −196 °C. What state is it in at −218 °C?

  1. −218 < −210
  2. So the answer is: solid

Answer: solid

Builds on: Temperatures of water changing state, The particle model

Leads to: Specific heat capacity and latent heat

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Atoms, elements and the periodic table

The periodic table: groups and periods

CCSS NGSS.MS-PS1-1CCSS NGSS.HS-PS1-1England: KS3 Chemistry: The periodic tableEngland: KS4 Combined Science: Atomic structure and the periodic table

Example

Which family does sodium belong to?

  1. Group 1 metals are soft and react vigorously with water; reactivity increases down the group.
  2. So the answer is: alkali metals (group 1)

Answer: alkali metals (group 1)

Builds on: Elements and their symbols

Leads to: Protons, neutrons and electrons, Group 1: the alkali metals and their trend, Group 7: the halogens and displacement, Group 0: why noble gases are unreactive and how we use them

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Energy

Conduction, convection and radiation

CCSS NGSS.MS-PS3-3CCSS NGSS.MS-PS3-4England: KS3 Physics: Energy (energy changes and transfers)England: KS3 Physics: Matter (energy in matter)

Example

Which kind of energy transfer is this: a metal spoon in hot soup getting hot?

  1. Conduction passes energy through a solid as particles vibrate and pass it on.
  2. So the answer is: conduction

Answer: conduction

Builds on: Energy stores and transfers

Leads to: Global winds, ocean currents and climate zones

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Kilowatt-hours and the cost of electricity

CCSS NGSS.MS-PS3-5CCSS NGSS.SEP 5England: KS3 Physics: Energy (energy costs)

Example

An oven with a power of 1.5 kW is used for 6 hours. How much energy does it transfer, in kWh?

  1. 1.5 × 6 = 9
  2. So the answer is: 9 kWh

Answer: 9 kWh

Builds on: Identify energy stores in everyday situations

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Electricity and magnetism

Electromagnets

CCSS NGSS.MS-PS2-3CCSS NGSS.HS-PS2-5England: KS3 Physics: Electricity and electromagnetism (magnetism)England: KS4 Combined Science: Magnetism and electromagnetism

Example

What core material makes an electromagnet strongest?

  1. A soft iron core concentrates the magnetic field.
  2. So the answer is: iron

Answer: iron

Builds on: Magnets and magnetic materials, Simple circuits

Leads to: The motor effect (F = B I l) and Fleming's left-hand rule

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Weather and climate

Air pressure, fronts and forecasting the weather

CCSS NGSS.MS-ESS2-5CCSS NGSS.SEP 4England: KS3 Geography: Weather and climate

Example

Wind blows from areas of…

  1. Air flows from high to low pressure; bigger differences give stronger winds.
  2. So the answer is: high pressure to low pressure

Answer: high pressure to low pressure

Builds on: Reading weather data, Measuring the weather

Leads to: Global winds, ocean currents and climate zones

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Space

Solar and lunar eclipses

CCSS NGSS.MS-ESS1-1England: KS3 Physics: Space physics

Example

Which type of eclipse is this: the Earth is between the Sun and the Moon?

  1. In a lunar eclipse the Earth passes between the Sun and Moon, and Earth's shadow falls on the Moon.
  2. So the answer is: lunar eclipse

Answer: lunar eclipse

Builds on: The Moon and its phases

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7th grade Science: Skills, Practice, Worksheets | Eurekami