Cast Science

Match the following subatomic particles to their charge:

• No charge

• Neutron

• Postive charge

• Proton

• Negative Charge

• Electron

Tags

NGSS.MS-PS1-1

The center of the atom is called the

• nucleus

• proton

• electron

• neutron

Answer explanation

The center of the atom is called the nucleus, which contains protons and neutrons.

Tags

NGSS.MS-PS1-1

According to this model, which molecule is a product from the chemical reaction?

• Fe

• CuSO₄

• Cu

• FeSO₄

Answer explanation

The correct product from the chemical reaction is FeSO4, as indicated by the model.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Look at the diagram of the roller coaster. Evaluate the relative potential energy at points 1-4. The height is in meters (m), Which two statements correctly describe the relative potential energy at various points on the track?

• At (1) the potential energy is greater than the potential energy at (3)

• At (2) the potential energy is greater than the potential energy at (3)

• At (3) the potential energy is greater than the potential energy at (4)

• At (4) the potential energy is greater than the potential energy at (2)

Answer explanation

At (1) and (2), the potential energy is higher than at (3) and (4), making the statements 'At (1) the potential energy is greater than the potential energy at (3)' and 'At (2) the potential energy is greater than the potential energy at (3)' correct.

Tags

NGSS.MS-PS3-2

A scientist measure the amplitude and wavelength of waves in the ocean and calculates the amount of energy contained in one square meter of water for each wave.

The data and calculations for four different waves are shown in the table. Which wave characteristics, if any, does the energy in the wave depend on,

• Amplitude

• Wavelength

• Energy

• Amplitude and Wavelength

Answer explanation

The energy in the wave depends on the Amplitude, as shown in the data and calculations for the four different waves.

Tags

NGSS.MS-PS4-1

Motion sensors on the ramp collect data on speed and kinetic energy.  The data is graphed above. 

What happens when the student moves from position A to B?

Select two correct answers:

• speed approximately doubles

• kinetic energy approximately quadruples

• speed is reduced

• kinetic energy doubles

Answer explanation

When the student moves from position A to B, the speed approximately doubles and the kinetic energy approximately quadruples, while the speed is reduced.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Students used a computer simulation to determine the variables that affect the gravitational force between two objects. Choose the claim that best agrees with the data from the chart:

• Mass does not affect the gravitational force between two objects.

• Mass is the only variable that affects the gravitational force between two objects.

• Distance is the only variable that affects the gravitational force between two objects.

• Both mass and distance are variables that affect the gravitational force between two objects.

Answer explanation

Both mass and distance are variables that affect the gravitational force between two objects as shown in the data from the chart.

Tags

NGSS.MS-PS2-4

Students used a computer simulation to determine the variables that affect the gravitational force between two objects.

As the mass of the objects increased, the gravitational force between them _________.

• increased

• decreased

• stayed the same

Answer explanation

As the mass of the objects increased, the gravitational force between them increased. This is because gravitational force is directly proportional to the mass of the objects involved.

Tags

NGSS.MS-PS2-4

A student learning about heat transfer makes this claim:

Some metals change temperature more rapidly than others.

The student will test this claim using metal rods made of iron and copper.

What other lab materials would be useful?

• prism, heat lamp, screen, meter stick

• beaker, digital scale, stopwatch, clamps

• litmus paper, beaker, balance, battery

• hot water, pan, stopwatch, thermometer

Answer explanation

The correct choice is hot water, pan, stopwatch, thermometer as they are essential for conducting an experiment to compare the rate of temperature change in iron and copper rods.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The movement of this particle is responsible for electrical energy​

• electron

• proton

• neutron

• nucleus

Answer explanation

The movement of electrons is responsible for electrical energy, making it the correct choice among the options provided.

Tags

NGSS.MS-PS2-3