LEAP Review Original

LEAP Review Lesson

Reminder:

In a vacuum, there are no (or very few) particles that can transfer and carry vibrations, so sound cannot travel

Unit 3 - Sound

Multiple Choice

Based on the information in Table 1, which statement best compares a sound wave in a vacuum to a sound wave in air?

• A sound wave in a vacuum travels much faster than a sound wave in air b/c there are no molecules to slow it down

• A sound wave in air travels much slower than a sound wave in vacuum b/c of the # of molecules in the air.

• A sound wave cannot travel in a vacuum b/c there are no molecules to transfer the energy.

• A sound wave travels at the same speed in a vacuum as a sound wave in air does.

​​Sound Waves

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Light and Sound waves are similar in how they react with materials.

Multiple Choice

The diagram shows sound and light waves from an emergency vehicle traveling toward a brick wall. The brick wall has both smooth and rough surfaces.

The sound waves from the siren will_______the smooth surface of the wall.

• only reflect off

• only pass through

• pass through and reflect off

Multiple Choice

The diagram shows sound and light waves from an emergency vehicle traveling toward a brick wall. The brick wall has both smooth and rough surfaces.

The light waves from the siren will_______the smooth surface of the wall.

• only reflect off

• only pass through

• pass through and reflect off

Multiple Choice

The diagram shows sound and light waves from an emergency vehicle traveling toward a brick wall. The brick wall has both smooth and rough surfaces.

Rougher sections of the wall will cause the _____ from the emergency vehicle to scatter.

• sound waves

• light waves

• sound and light waves

Multiple Choice

Which observation from Figure 1 can best be used as evidence to support the claim that the Sun has a gravitational pull on asteroids in the solar system?

• Most of the asteroids in the Solar System are between Jupiter and the Sun.

• All of the planets and asteroids in the Solar System orbit the Sun.

• Apollo asteroids have orbits closer to the Sun than other asteroids in the Solar System.

• Only the planets with the largest masses in the Solar System orbit the Sun.

Multiple Choice

Based on evidence in Table 1, which planet would have the greatest effect on the orbit of most asteroids?

• Mercury

• Earth

• Mars

• Jupiter

Multiple Choice

A student designs an experiment to test how different types of surfaces affect the size of the force needed to move an object. The student will use a spring scale to measure the size of the force needed to drag a brick across different flat surfaces.

The size of the force needed to move the brick is the ___.

• independent variable

• dependent variable

• control

Multiple Choice

A student designs an experiment to test how different types of surfaces affect the size of the force needed to move an object. The student will use a spring scale to measure the size of the force needed to drag a brick across different flat surfaces.

The mass of the brick is the ___.

• independent variable

• dependent variable

• control

Multiple Choice

A student designs an experiment to test how different types of surfaces affect the size of the force needed to move an object. The student will use a spring scale to measure the size of the force needed to drag a brick across different flat surfaces.

The surface material is the ___.

• independent variable

• dependent variable

• control

A group of students is building a marble track. They plan to investigate how the potential and kinetic energies of different types of marbles change as the marbles move through the track. Figure 1 shows the two types of marbles and the different materials the students will use in the investigation.

Potential and Kinetic Energy

Multiple Choice

The students decide to investigate how the mass of each marble affects its kinetic energy. The students will roll each marble down the first hill on the track. They will then compare the results for the kinetic energy of both the ceramic marble and the steel marble.

Which figure best compares the kinetic energy of each marble when the marbles roll down the hill on the track?

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Multiple Choice

Which figure best shows how the potential energy of a marble changes as the marble travels along the track?

Multiple Select

Based on Figure 2, at which points along the marble track is the potential energy of the marble increasing?​

Select the two correct answers.

• Point 1

• Point 2

• Point 3

• Point 4

• Point 5

Multiple Choice

Which statement best describes how the organisms shown in Figure 1 compete for resources?

• Rabbits, grasshoppers, and mice all compete with snakes for food.

• The Anasazi, mice, and domesticated turkeys all compete for corn.

• Hawks, rabbits, and Anasazi all compete for grass.

• Snakes, hawks, and domesticated turkeys all compete with the Anasazi for food.

Multiple Select

Which TWO models of the Sun, Earth, and Moon best supports why Earth has different seasons?

Open the link below in your web browser.

​https://www.youtube.com/watch?v=pw9sHIZdt-I

Types of Friction