Amplify Science Unit 4 Chapter 2

A mother dog is communicating with her puppies by making growling noises. Once the growling noise leaves the mother dog, what happens next?

• As the sound moves through the air, particles in the air collide with one another.

• As the sound moves through the air, particles in the air move back toward the mother dog.

• As sound moves throught the air, particles in the air move a lot at first.

• As sound moves throught the air, particles in the air line up and move toward the puppies.

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Maria is at a piano concert with her sister. Which of the following best describes the movement of energy at the concert as soon as the concert begins?

• Sound energy moves from the piano to Maria's ears.

• Sound energy moves from Maria's ears to the piano.

• Sound energy moves from the piano to Maria's brain.

• There is no sound energy.

Two squirrels (A and B) are in a tree. One squirrel (A) makes loud noises at the other one (B). Explain how energy is related to this example.

• Energy is transferred from squirrel B to squirrel A.

• Energy is created by squirrel A.

• Energy is transferred from the ground, then to squirrel A, and then finally to squirrel B.

• Energy is transferred from squirrel A to squirrel B.

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A scientist studies the sounds of three different monkeys. She creates diagrams that represent the sounds each monkey makes. Study the diagrams and answer the following question: The scientist makes the claim that Monkey 1 makes the loudest noises. Is her claim accurate? Explain using evidence.

• Yes, the amplitude from Monkey 1 is the largest, which means the sound is the loudest.

• Yes, the amplitude from Monkey 1 is the smallest, which means the sound is the loudest.

• No, the amplitude from Monkey 1 is the largest, which means the sound is the quietest.

• No, the amplitude from Monkey 1 is the smallest, which means the sound is the quietest.

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NGSS.MS-PS4-1

The fishing business manager opens the wave report for today. She creates a sketch to identify the different parts of a wave. She needs to know the amplitude and wavelength of each wave. Write the missing terms in the diagram below.

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All mountain birds have a special body part that allows them to make two sounds at one time. What is the name of this body part?

• Vocal cords

• Lungs

• Syrinx

• Voice Box

The air, water, and solids are all materials. Materials are made up of millions an millions of tiny pieces called __________?

• Diagrams

• Particles

• Vibration

• Patterns of motion

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A boat captain is planning a trip across an ocean with 4 guests. To plan a safe trip, he needs to pick the calmest path through the water. He looks at models showing the wavelength and amplitude of the waves along two different paths. Based on the models above, which path would be best for a peaceful boat trip?

• Path A would be the best because the wave amplitude is greater than the wavelength. This means the boat will barely be affected by the waves.

• Path A would be the best because the wave amplitude is the smallest and weakest. This means that the waves will have the least impact on the boat.

• Path B would be the best because the wave amplitude is greater. The waves would be able to move the boat quickly across the ocean.

• Path B would be the best because the wave amplitude of 5 feet is about equal to the number of passengers on the boat. This would cancel out the impact of the waves on the boat.

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Which of the following statements best describes a wave?

• A wave is a pattern of motion that travels away from a source.

• A wave is a pattern of motion that travels towards a source.

• A wave is a pattern of motion that stays in one place.

• A wave is a pattern of motion that continues forever.

Which statement best explains how the nose and the brain work together?

• The nose sends oxygen to the brain.

• The nose sends signals to the brain about scent information.

• The brain sends signals to the nose to breathe out carbon dioxide.

• The brain sends signals to the nose about scents of objects.

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