front 1 What is loudness? | back 1 How loud or quiet a sound is |
front 2 What is the factors affecting loudness? | back 2 The range of the vibration, and the distance of the object. |
front 3 The higher the range of the vibration, the __________ the loudness | back 3 higher |
front 4 The higher the distance of the object, the ____________ the loudness | back 4 lower |
front 5 What is amplitude? | back 5 The maximum distance a particle can move, either forward or backward, in a sound wave. |
front 6 The unit of amplitude | back 6 dB |
front 7 Loudness = __________ | back 7 amplitude |
front 8 Pitch is? | back 8 How high or low a sound is on the musical scale. |
front 9 Pitch= _______________ | back 9 frequency |
front 10 What is frequency? | back 10 Frequency is the number of complete vibrations |
front 11 Shorter the object, the _________ the pitch | back 11 higher |
front 12 faster the vibrations, the ____________ the pitch | back 12 higher |
front 13 The unit of frequency | back 13 Hz |
front 14 What is inteference of a sound wave? | back 14 The process of two waves combining. |
front 15 Reinforcement is | back 15 The process of two sound waves with the same peak and trough meeting to get stronger |
front 16 Cancellation is | back 16 The process of two sound waves with opposite troughs and peak meeting to cancel out each other. |
front 17 When two waves reinforce, what happens to the amplitude or frequency? | back 17 Amplitude are added together and the frequency stays the same. |
front 18 When two waves cancel, what happens to the amplitude or frequency? | back 18 Amplitudes are added up to get 0 but the frequency stays the same. |
front 19 What is the collision theory? | back 19 The collisont heory states that the Moon was formed by a collison between Earth and a Mars-sized planet, Theia. |
front 20 How was the moon formed? | back 20 1. Theia hit Earth,s ending dust and gas into the air. 2. Collision caused dust and gas to be broken off both planets. 3. The dust and gas were pulled together udner the force of gravity to form the Moon. |
front 21 Give two evidence supporting the collision theory | back 21 Two of the following evidence: 1. The Moon is less dense than the Earth. 2. The Moon has a small iron core, just like the Earth. 3. The composition of the Earth's rocks and the Moon's rocks are the same. 4. The collision theory fits with the theory of how the Solar System was formed. |
front 22 Give two evidence contradicting the collision theory | back 22 Two of the following evidence: 1. Venus has no Moon: It was expected that Venus would have a moon similiar to the way Earth got its moon. 2. The Moon's rocks was expected to be more similiar to Theia's rocks than the Earth's. 3. The surface of the Earth doesn't appear to have ever been molten. |
front 23 What are nebulae? How are its particles? What are the gases it contains? | back 23 Clouds of dust and gas in space. The particles in a nebulae are very spread out. The gases ina nebulae consists of mainly hydrogen and a little helium. |
front 24 How are nebulae formed? | back 24 A star explodes at the end of its life, sending dust and gas into a wide area of space, forming a nebula :) |