Physical Science 9 Semester Exam

Semester Exam Review

(Physical Science 9)

HS-PS2-1

HS-PS3-1

HS-PS1-1

HS-PS2-1:

Forces

Analyze data to support the claim that Newton's second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration.

The measurement of how far an object has moved.

Distance

​An object's change in position

​​Displacement

Multiple Choice

What is the total distance?

• 120 km

• 60 km

• 30 km

• 0 km

Multiple Choice

What is the total displacement?

• 120 km

• 60 km

• 30 km

• 0 km

A student wants to calculate his velocity when running using a stopwatch and a ruler.

​

Experiments

Multiple Choice

What data should he collect?

• distance and time

• velocity and time

• velocity and distance

Open Ended

How can he collect the distance and time?

Multiple Choice

Imagine he collects a distance of 50 m and a time of 10 seconds. What was his average velocity?

• 500 m/s

• 50 m/s

• 5 m/s

• 2.5 m/s

Open Ended

What are some errors in the experiment, and how can he reduce the errors?

HS-PS3-1:

Energy

Create a computational model to calculate the change in the energy of one component in a system when the change of energy of the other component(s) and energy flows in and out of the system.

W = Fx

The energy transferred to or from an object via the application of force along a displacement

W = ΔE

​

​Work

Multiple Choice

In this example, how much work is done?

• 60 J

• 36 J

• 15 J

• 12 J

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​Kinetic Energy and Potential Energy

Multiple Choice

If the object has a mass of 1.0 kg, what is the potential energy at A? (g = 10 $$\frac{m}{s^2}$$ )

• 400 J

• 40 J

• 4 J

• 0.4 J

Multiple Choice

If the object has a 40 J of potential energy at A, how much kinetic energy does he have at B?

• 400 J

• 40 J

• 4 J

• We cannot tell because we do not know the speed.

Multiple Choice

When the object is at C, how will we calculate the speed? $$K\ =\ \frac{1}{2}mv^2$$

• $$v\ =\ \frac{1}{2}mK^2$$

• v = mgh

• $$v\ =\ \sqrt[]{2h}$$

• $$v\ =\ \sqrt[]{\frac{2K}{m}}$$

Multiple Choice

Two people are in a race. They have the same mass. At one point in the race they change their speeds. Who's car is doing more work?

• Amanda

• Bertha

• Same

Open Ended

Use CER to show that Bertha's car is doing more work.

HS-PS1-1:

Periodic Table

Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms

Dropdown

Beryllium's atomic number is ​

Select answer

.

It's mass number is ​

Select answer

.

It has ​

Select answer

protons and ​

Select answer

electrons.

It has ​

Select answer

neutrons.

Draw

Draw the atomic structure of Beryllium (Atomic number = 4 and atomic mass = 9)

Multiple Choice

How many valence electrons does Beryllium have?

• 1

• 2

• 3

• 4

Dropdown

Boron (B) has a ​

Select answer

atomic radius than Fluorine (F).

Boron and Fluorine are in ​

Select answer

period.

Boron has ​

Select answer

protons.

The force on the outer electrons of Boron is ​

Select answer

than fluorine.

Be ready to use CER to explain atomic radius as well reactivity.

​

CER

Dropdown

Lithium is ​

Select answer

reactive than Cesium.

Lithium is in period ​

Select answer

and Cesium is in period ​

Select answer

.

Lithium has ​

Select answer

energy levels than Cesium.

Lithium has ​

Select answer

force on the valence electrons.

​Good Luck!!