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 Forces and Energy 30 Flashcards |
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What is the unit of pressure measured in? |
Card: 1 / 30 |
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Newtons per metre squared (N/m²) |
Card: 2 / 30 |
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True or False: Balanced forces cause an object to change its motion. |
Card: 3 / 30 |
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False. Balanced forces do not change the motion of an object. |
Card: 4 / 30 |
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Riddle: I apply force to make things turn around a point; my effect is seen in doors and pedals. What am I? |
Card: 5 / 30 |
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Turning effect of forces |
Card: 6 / 30 |
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Fill in the blank: The formula for calculating speed is ______. |
Card: 7 / 30 |
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Speed = Distance ÷ Time |
Card: 8 / 30 |
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Which of the following is the standard scientific unit for measuring speed? A) Mach B) Joule C) Pascal D) Meters per second |
Card: 9 / 30 |
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D) Meters per second |
Card: 10 / 30 |
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What happens to air pressure inside a balloon as more air is blown into it? |
Card: 11 / 30 |
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The pressure increases. |
Card: 12 / 30 |
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True or False: The moment of a force is independent of its distance from the pivot. |
Card: 13 / 30 |
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False. The moment depends on both the size of the force and the distance from the pivot. |
Card: 14 / 30 |
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Riddle: I increase when the area decreases, making cutting easier. What am I? |
Card: 15 / 30 |
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Pressure |
Card: 16 / 30 |
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Fill in the blank: The turning effect of a force is calculated using the formula ______. |
Card: 17 / 30 |
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Moment = Force × Distance |
Card: 18 / 30 |
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What type of graph is used to show the relationship between distance and time? |
Card: 19 / 30 |
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Distance-time graph |
Card: 20 / 30 |
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Which of the following statements is true regarding unbalanced forces? A) They cause objects to remain at rest B) They can change the direction of an object's motion C) They always act in pairs D) They have no effect on motion |
Card: 21 / 30 |
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B) They can change the direction of an object's motion |
Card: 22 / 30 |
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Fill in the blank: Pressure in a liquid increases with ______. |
Card: 23 / 30 |
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Depth |
Card: 24 / 30 |
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True or False: The speed of diffusion is not affected by temperature. |
Card: 25 / 30 |
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False. Higher temperatures increase particle speed and speed up diffusion. |
Card: 26 / 30 |
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What is the average speed if a car travels 150 meters in 30 seconds? |
Card: 27 / 30 |
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5 m/s |
Card: 28 / 30 |
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Riddle: I am the force that keeps planets in orbit, pulling them towards a massive star. What am I? |
Card: 29 / 30 |
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Gravitational force |
Card: 30 / 30 |
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Completed! Keep practicing to master all of them. |
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