Forces and Waves most missed (old)

The swimmer pictured below pushes against the wall with her feet and goes forward through the water. Which of the following best explains the force that initially pushes her forward?

• The reaction force of the wall pushing against her foot.

• The action force of her foot pushing against the wall.

• The force of her hands pushing against the water.

• The force of friction as she moved through the water.

Tags

NGSS.MS-PS2-1

While driving down the road, tiny hummingbird hit the windshield of a Maria's car. This is a clear case of Newton's third law of motion. The hummingbird hit the car and the car hit the hummingbird. How do the forces on the hummingbird and the windshield compare?

• The forces are equal and opposite.

• The force on the windshield is greater.

• The force on the hummingbird is greater.

• The force on the hummingbird is less than that of the windshield.

Tags

NGSS.MS-PS2-1

The students below are modeling a wave using a slinky spring. Which of the following explanations best describes the relationship between the matter and energy being modeled in the slinky spring?

• Particles of matter in the medium vibrate by pushing together and moving apart parallel to the direction in which the wave travels.

• Particles of matter in the medium vibrate by pushing together and moving apart perpendicular to the direction in which the wave travels.

• Particles of matter in the medium vibrate by moving back and forth and perpendicular to the direction the wave travels.

• Particles of matter in the medium vibrate by moving back and forth and parallel to the direction the wave travels.

Tags

NGSS.MS-PS4-1

The diagram below represents one complete wave cycle. What is the wavelength of the wave in the diagram?

• 2m

• 3m

• 4m

• 6m

Tags

NGSS.MS-PS4-1

Use the graph to answer the question. What information can be concluded by analyzing the graph?

• Wave velocity is inversely related to wavelength.

• Wave velocity is directly related to wave frequency.

• Wavelength and frequency have a direct relationship

• Wavelength and frequency have an inverse relationship.

Tags

NGSS.HS-PS4-1

The diagrams below show waves interfering as they move through the same medium at the same time. Which of the wave interactions would best represent constructive interference of sound waves produced by musical instruments?

• wave interference A

• wave interference B

• wave interference C

• wave interference D

Tags

NGSS.MS-PS4-1

The diagram below represents the electromagnetic spectrum. High-frequency electromagnetic waves can carry more information than lower frequency electromagnetic waves. If you were designing a computer network system using fiber optic cable, you could use many different types of electromagnetic waves to carry digitized information. What type of electromagnetic waves would most likely be best to use to carry large amounts of digitized information in a computer network?

• Radio Waves

• Radar Waves

• Microwaves

• Infrared Waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-3

Sam set up an investigation to determine how a net force applied to a cart would affect its motion. The setup for his investigation is shown below. In his investigation he added a net force to an object at rest and continued adding the same net force which he measured by the spring scale as shown in the diagram. How would a force applied in this way most likely affect the motion of the cart?

• The cart would immediately gain speed and then move at a constant speed as long as the net force is applied.

• The cart would immediately gain speed and then slow down and eventually stop when the force is applied.

• The cart would immediately gain speed and continue to gain speed at the same rate as long as the net force is applied.

• The cart would immediately gain speed and then change direction when the force is applied.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The following are characteristics of a type of wave.

-travels through glass and water -

travels in a direction that is perpendicular to the vibration of the particles in the medium

-travels through empty space when there is no medium available

-bounces off of many types of material

Which of the following best explains what type of wave this is?

• Electromagnetic because it travels in empty space.

• Mechanical because there is no medium

• Electromagnetic because it is a sound wave.

• Mechanical because it is a transverse wave.

Tags

NGSS.MS-PS4-2

A student was investigating how mass would affect the motion of objects. In her investigation she rolled a cart with a brick in it and determined its speed. While the cart was still moving she placed another brick on it and measured the speed again. The setup for her investigation is shown below. Which of the following hypotheses would most likely be supported by her investigation?

• Increasing the mass of an object will decrease its speed.

• Decreasing the mass of an object will decrease its speed.

• Increasing the force on an object will increase its speed.

• Decreasing the force on an object will increase its speed.

Tags

NGSS.MS-PS2-2