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This term, our topic is space. To start off, we learnt about the planets in our solar system: their order, sizes and orbits. In order to make a comparison, we were given different objects, and had to guess which object represented each planet - their sizes were based on imagining the sun was as big as a beach ball. We then went up on to the playground and measured their distance from the sun, imaging that it was just 10cm in diameter. We were shocked by the distances!
We conducted an experiment to see how the surface area of the blades on a spinner would affect the time it took it to fall. We found out that the smaller the blades, the quicker it fell - this is because there was less air resistance acting upon the smaller surface area.
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This week, we looked at parachutes. Each group had to choose a variable to change and investigate its effects.
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We have been learning about friction. We conducted an experiment to test which shoe had the best grip (therefore, which produced the most friction) To do this, we used Newton meters to measure the force required to move different shoes - the ones that required us to work harder to move them, produced the most friction and had best grip.
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In our science lesson, we investigated levers. In order to do this, we created our own, using rulers and pencils. At one end was a load, the other a force to lift the load. As we moved the fulcrum, it was interesting to see how the amount of force required to lift the load changed. We found out that the closer we got to the force, the more force it required to lift the load. Therefore, levers are useful to make a little force have a greater affect.
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We investigated pulleys and how they can affect the amount of force required to lift a load.
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