Forces, light and weather

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32 articles

• Forces, light and weather

  A cloud record needs a safe viewpoint and a date

  Record visible sky conditions from a safe accessible viewing place.

• Forces, light and weather

  A low ramp test with a consistent release

  Test a defined ramp change and record where the object stops.

• Forces, light and weather

  A paper wind indicator shows a limited relationship

  Describe the indicator's movement without treating it as a calibrated weather instrument.

• Forces, light and weather

  A prediction is a reasoned idea made before the test

  Write an expected result and its reason before testing.

• Forces, light and weather

  A science conclusion should point back to the trials

  Tie the conclusion to the actual trials and conditions.

• Forces, light and weather

  A scientific diagram should help another person understand the setup

  Draw the important parts of a setup so another person can understand it.

• Forces, light and weather

  A shadow does not show everything about its object

  Compare the physical object with its changing projected outline.

• Forces, light and weather

  A volume comparison can stay comfortably quiet

  Compare gentler and firmer actions within a comfortable listening level.

• Forces, light and weather

  Absorbency: equal paper sizes and equal water amounts

  Keep water amounts and paper sizes consistent in a small tabletop test.

• Forces, light and weather

  An unexpected result belongs in the investigation log

  Treat a surprising result as information to examine.

• Forces, light and weather

  Change a paper strip's free length and compare its pitch

  Compare a controlled change to a vibrating paper strip.

• Forces, light and weather

  Find the moving part in a sound-making object

  Link a sound-making action with an observable vibrating part.

• Forces, light and weather

  Five weather records describe five recorded days

  Use dated observations to describe patterns without declaring a climate trend.

• Forces, light and weather

  Flat paper and crumpled paper: ask what changed

  Separate observations about falling from claims about weight alone.

• Forces, light and weather

  Floating predictions are ideas that can be revised

  Compare an initial idea with observations of safe large objects in a shallow tray.

• Forces, light and weather

  Friction on two surfaces: watch the stopping position

  Compare motion over surfaces using the same object and starting procedure.

• Forces, light and weather

  It turned left is an observation; why it turned is another question

  Record what was noticed separately from an idea about why it happened.

• Forces, light and weather

  Move the torch and follow the shadow's direction

  Relate a shadow's location to the light source.

• Forces, light and weather

  Not every metal-looking sample is attracted to a magnet

  Test safe objects instead of assuming all metals respond alike.

• Forces, light and weather

  Paper aircraft: change one feature and give the comparison a fair chance

  Change one design feature while keeping the launch procedure consistent.

• Forces, light and weather

  Paper helicopter blades: identify the feature under investigation

  Identify one deliberate change and state what will be measured.

• Forces, light and weather

  Push or pull? Describe the action before the movement

  Describe the action before explaining the resulting movement.

• Forces, light and weather

  Rainfall data: read the unit and the collection period

  Read a labelled record with units and a stated collection period.

• Forces, light and weather

  Reflection: move the patch with a small mirror turn

  Follow a torch beam between a stable mirror and a paper target.

• Forces, light and weather

  Repeated trials show variation the best attempt hides

  Use several attempts to notice variation within the same setup.

• Forces, light and weather

  Shadow size changes when the object moves

  Change the object's position while keeping the light and screen fixed.

• Forces, light and weather

  The next investigation should answer a specific remaining question

  Choose a new test that addresses a specific uncertainty.

• Forces, light and weather

  The salt is harder to see: what can we conclude?

  Distinguish a material becoming less visible from proving it no longer exists.

• Forces, light and weather

  Weather now and weather forecast: read the time reference

  Separate a current record from a prediction about later conditions.

• Forces, light and weather

  What a window weather log cannot tell us

  Name what the method cannot establish as well as what it records.

• Forces, light and weather

  Which materials transmit the torch light?

  Compare how materials affect a torch beam in a shaded indoor space.

• Forces, light and weather

  Will this material work as the model's rain cover?

  Define the practical question before choosing a test.

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