Which of these statements would best explain the problem encountered with nuclear waste disposal?

The isotopes have a long half-life and only remain radioactive for a long time period.

The isotopes have a short half-life and only remain radioactive for a long time period.

The isotopes have a long half life and only remain reactive for a short time period.

The isotope has a short half life and only remain radioactive for a short time period.

As we stand and watch the hot air balloon rise in the sky, we can imagine what is happening at the microscopic level to the gas molecules inside the balloon. As the balloon rises, the gas molecules are

moving faster and spreading apart.

slowing down and moving closer together.

Gradually escaping from the confines of the balloon

all collecting at the top of the balloon pushing upward

Describe the best way Ryan can increase the rate of dissolving of lead (II) chloride in a solution.

Increase the temperature of the water.

Increase the concentration of the salt.

Increase the particle size of the solute.

Agitate the lead (II) chloride in cool water.

Listed in the Item Bank are some important labels for sections of the image below. Put the following in the correct order from acidic to basic. Lemon Juice Saliva HCl NaOH Blood Bleach

1. HCL 2. Lemon Juice 3. Saliva 4. Blood 5. Bleach 6. NaOH

1. NaOH 2. Lemon Juice 3. Saliva 4. Bleach 5. Blood 6. HCl

1. NaOH 2. Blood 3. HCl 4. Bleach 5. Lemon Juice 6. Saliva

1. NaOH 2. Bleach 3. Blood 4. Saliva 5. Lemon Juice 6. HCl

Jane puts some water into an electric kettle and then she connects it to the power source. She observes that after some time, the water inside the kettle heats ip and begins to boil. What is happening?

Electrical energy is transforming into heat energy.

Light energy is transforming into heat.

Heat energy is transforming into electricity.

Electrical energy is transforming into light and heat energy.

Predict the energy trend as a substance changes from a solid to liquid to gas on this graph.

It would increase from bottom left to top right.

It would decrease from top left to bottom right.

It would be a horizontal line as energy would remain constant.

It would increase from solid to liquid, then decrease from liquid to gas.

Based on the graph, how would you describe the net forces acting on the moving object?

Net force is greater to the right.

There is no way to determine net force.

Net force is positive and to the right.

What evidence is there that work is being done?

The boy uses force to move the rock a distance.

A simple machine makes a task easier.

The rock has a larger force than the boy.

Ultraviolet rays are more likely to give you a sunburn than visible light. What statement would be the best possible explanation for this?

Ultraviolet rays have a higher frequency and therefore have more energy.

Visible light cannot penetrate the skin.

Visible light has a broader range of frequencies and amounts of energy.

Ultraviolet rays have a longer wavelength and therefore have more energy.

A major difference between AC and DC electricity is in its usefulness to effectively supply electricity to large groups. The best explanation for the difference is which of these statements?

AC current can be used in transformers while DC current cannot.

DC current can be used in transformers while AC current cannot.

AC current fluctuates too much to be used effectively in power generation.

DC current fluctuates too much to be used effectively in power generation.

An electric current is created in a long thin wire. How will increasing the current and changing the direction of the current effect the direction that a compass placed under the wire will point?

The compass will flip exactly 180 degrees.

It compass will spin continuously.

The compass will spin exactly 360 degrees.

The compass will not react and still point north.

Which of these BEST describes why an ionic solution is a good conductor of electricity while a covalent solution is a poor conductor?

B. Ionic compounds form charged particles in solution, and electricity will only flow if charged particles are present.

A. Ionic compounds form charged molecules in solution, and electricity cannot flow if charged molecules are present.

C. Covalent compounds form charged molecules in solution, and electricity cannot flow if charged molecules are present.

D. Covalent compounds form charged particles in solution, and electricity will only flow if charged particles are present.

Free fall is a situation in which the only force acting upon an object is gravity. Why do all objects in free fall have the same acceleration?

acceleration due to gravity is always the same

their masses are always the same

the distance between two objects is always the same

the gravitational force between two objects is always the same

Based on the table, what might be a reasonable conclusion?

Sound travels faster through more dense materials.

The speed of sound depends only on the state of matter.

Sound travels slower through metals than any other materials.

Sound travels faster through aluminum than any other material that exists.

Observe the image above. Two fire trucks with sirens speeds towards and away from an observer. Which statement is true involving the Doppler effect observed by the observer?

a firetruck traveling towards the observer produces a higher than normal apparant siren frequency

the Doppler effect is not observed by the observer

Due to the Doppler effect, the fire truck traveling away from the observer is not heard

the foretruck traveling away from the oberver produces a higher than normal apparent siren frequency

Which statement about the fire truck's siren frequency is correct?

the fire truck traveling towards the observer produces a higher than normal apparent siren frequency

the fire truck traveling away from the observer produces a higher than normal apparent siren frequency

Resource Library

Science

Physical Science

25 26 Hs Physical Science Spiral Review

25-26 HS Physical Science Spiral Review

Authored by Courteney Gamble

Science

12th Grade

NGSS covered

Used 12+ times

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58 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

₇₈I₅₃

131I

₅₃I

¹³¹I

Tags

NGSS.HS-PS1-8

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

An element from Group 2 will form ionic bonds with

any other metal.

all transition metals.

a nonmetal, Groups 13-17.

any Noble gas in Group 18.

Tags

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

Which statement accurately describes covalent bonds?

Covalent bonds are formed by metals and nonmetals.

Covalent bonds are typical of carbon compounds.

Covalent bonds are created by the attractions between oppositely charged ions.

Covalent bonds break apart when dissolved in water and allow for the conduction of electricity.

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

What is the chemical formula for Aluminum fluoride?

Al₃F

AlF₃

Al₂F₃

AlF

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

Based on the Law of Conservation of Mass, describe the relationship between the mass of the reactants and the mass of the products.

The mass of the reactants equals the mass of the products.

The mass of the reactants is less than the mass of the products.

The mass of the reactants is greater than the mass of the products.

The mass of the products is always greater than the mass of the reactants.

Tags

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

The source of the energy released in fission and fusion reactions is:

mass converted to energy

breaking of chemical bonds

formation of alpha particles

formation of new chemical bonds

Tags

NGSS.HS-PS1-8

MULTIPLE CHOICE QUESTION

30 mins • 1 pt

Using the chart, determine the amount of Co-57 present on January 21 if you had a sample of 8g on January 1st.

2 g

4 g

16 g

25 g

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25-26 HS Physical Science Spiral Review

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

An element from Group 2 will form ionic bonds with

Which statement accurately describes covalent bonds?

What is the chemical formula for Aluminum fluoride?

Based on the Law of Conservation of Mass, describe the relationship between the mass of the reactants and the mass of the products.

The source of the energy released in fission and fusion reactions is:

Using the chart, determine the amount of Co-57 present on January 21 if you had a sample of 8g on January 1st.

Which of these statements would best explain the problem encountered with nuclear waste disposal?

The molecules of a substance are moving rapidly in a container. The molecules do not interact with each other. If the container is opened, the molecules will escape from the container. In what phase of matter are the molecules in the container?

As we stand and watch the hot air balloon rise in the sky, we can imagine what is happening at the microscopic level to the gas molecules inside the balloon. As the balloon rises, the gas molecules are

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