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Column A1. A: A 2. B: B 3. C: C 4. D: D 5. E: E 6. F: c F Column B element compound mixture
1. 1 answer
2. 24 views
Each dot represents an atom. Different colors represent different types of atoms. Match the picture with the correct type of
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2. 41 views
Column A
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2. 21 views
Which statement is NOT TRUE about molecules and compounds?a Molecules are made up of two or more chemically bonded atoms. b All
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What is all matter made of?a compounds b cells c molecules d atoms
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2. 27 views
Match each subatomic particle with the correct descriptions.Column A 1. Has a positive charge.: Has a positive charge. 2. Has a
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2. 53 views
A student pours a spoonful of dirt into a cup of water. The water and dirt are stirred together. The water turns a light brown
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2. 27 views
Question 5 (1 point)1340358 Based on the methods used to separate the substance into its parts, is Substance U a compound? a
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Which phase change occurs when the kinetic energy of molecules decreases?a Melting b Condensation c Boiling d Sublimation
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The diagram shows molecules in a state of matter.Which statement best describes what will occur if enough thermal energy is
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2. 44 views
The graph below shows the phase change for H2O.Which statement best describes what is occurring at segment C? a As energy
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Jessie creates a model of two waves that have the same amplitude as shown. Which description BEST compares the two waves?Respons
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Four different waves, W, X, Y, and Z, are represented in the diagram below.Correctly order the waves by amplitude, beginning
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2. 19 views
According to the information in the table, which of the following boys would hear a rock fall off of a cliff a kilometer away?Re
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2. 35 views
The pictures show three objects. Match each object with the correct name.Put responses in the correct input to answer the
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2. 26 views
Why does white light separate into different colors?Responses magnification magnification reflection reflection dispersion
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2. 36 views
A student is investigating two types of waves. Which question can the student ask to determine whether a wave is
1. 1 answer
2. 31 views
In a vacuum, all electromagnetic waves have the same: Responses amplitude. amplitude. frequency frequency speed. speed.
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2. 23 views
A student is told to propose a design for a device capable of producing an image like the one shown below of the interior of the
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2. 33 views
How is white light different from the rest of the electromagnetic spectrum?Responses White light is invisible to the human eye.
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2. 32 views
What does the amplitude of a sound wave depend on?Responses pitch pitch frequency frequency wavelength wavelength loudness
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2. 26 views
The diagram shows the electromagnetic spectrum.Which statement BEST compares a gamma ray to a radio wave? Responses A gamma ray
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2. 49 views
When Truman walks across the tile floor in his kitchen, the sound of his shoes is loud and sharp. Which of the following best
1. 1 answer
2. 30 views
Mackenzie creates a transverse wave using a rope tied to a tree, as shown in the diagram. Her teacher asks her to change the
1. 3 answers
2. 28 views
Which of the following is a quality of a convex lens?Responses light is spread out light is spread out light is directed away
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2. 26 views
Which statement is correct about electromagnetic and mechanical waves?Responses Electromagnetic waves are transverse, but
1. 1 answer
2. 33 views
A student must create a mode of a lens. The lens must be able to focus light into a small space. Which best describes the type
1. 1 answer
2. 30 views
A student must create a model of light rays interacting with the convex lens found in a magnifying glass. Which model should the
1. 5 answers
2. 30 views
A student must create a model of light rays interacting with the convex lens found in a magnifying glass. Which model should the
1. 1 answer
2. 24 views
have you learnt about lenses and their diagrams?
1. 1 answer
2. 21 views
A student is designing a device for humans to communicate through detectable light. Which waves should the student use from the
1. 3 answers
2. 39 views
What is the wavelength of this wave?Responses 2 m 2 m 3 m 3 m 6 m 6 m 4 m
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2. 19 views
What causes light to slow down?a moving into a denser medium b moving into a vacuum c moving into a lighter medium d moving into
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2. 32 views
Different colors absorb and reflect different amounts of sunlight. Which color would make the most sense to use to paint a house
1. 1 answer
2. 26 views
Select all of the following that are correct about mechanical waves.a They can propagate in a physical medium. b They transfer
1. 1 answer
2. 29 views
Mac and Suzanne cut holes in the bottom of two cups and connect them with a string. When Mac whispers into one cup, Suzanne can
1. 1 answer
2. 24 views
On a guitar, the longest string vibrates slowly, and the shortest string vibrates very quickly. What conclusion can be made
1. 1 answer
2. 31 views
Describe how a light wave changes as it travels from the air into water.a It speeds up because water is more dense than air. b
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2. 25 views
A television remote control is used to direct pulses of electromagnetic radiation to a receiver on a television. What does this
1. 1 answer
2. 40 views
Why would a baseball player see a baseball flying through the air before he hears the crack of the ball on the bat?a because
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2. 35 views
Airport security uses electromagnetic waves to see items inside of luggage without having to open the bags. Which type of
1. 1 answer
2. 42 views
A student has to create a model of a convex lens. Which property of a convex lens should the student include in the model?a The
1. 1 answer
2. 35 views
A student is building a model of a lens that will spread light over the biggest space. Which best describes the type of model
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2. 22 views
What do we use them?
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2. 20 views
What do you you know about infrared wavse?
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2. 25 views
What do we know about frequency and wavelength together?
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2. 24 views
Which type of electromagnetic waves would be the best to use in an object designed to cook food?a infrared waves b microwaves c
1. 1 answer
2. 41 views
What causes light to slow down?a moving into a less adhesive medium b moving into a lighter medium c moving into a vacuum d
1. 1 answer
2. 30 views
Some frequencies of ultraviolet light have enough energy to kill bacteria and viruses, but do not have enough energy to
1. 1 answer
2. 36 views
Rachel is learning about electromagnetic radiation that comes from the Sun. What types of electromagnetic radiation does the Sun
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2. 48 views
The diagram below represents a transverse wave.The wavelength of this wave is equal to the distance between which two points?
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2. 20 views
Why would a baseball player see a baseball flying through the air before he hears the crack of the ball on the bat?a because
1. 1 answer
2. 36 views
A student is building a model of a lens that will spread light over the biggest space. Which best describes the type of model
1. 1 answer
2. 30 views
A student has to create a model of a convex lens. Which property of a convex lens should the student include in the model?a The
1. 1 answer
2. 41 views
Different colors absorb and reflect different amounts of sunlight. Which color would make the most sense to use to paint a house
1. 1 answer
2. 24 views
Which type of electromagnetic waves would be the best to use in an object designed to cook food?a infrared waves b microwaves c
1. 1 answer
2. 35 views
Select all of the following that are correct about mechanical waves.a They can be transverse. b They transfer energy from
1. 1 answer
2. 26 views
Mac and Suzanne cut holes in the bottom of two cups and connect them with a string. When Mac whispers into one cup, Suzanne can
1. 1 answer
2. 24 views
A student is investigating two transverse waves. One of the waves is electromagnetic and the other wave is mechanical. Which
1. 1 answer
2. 34 views
On a guitar, the longest string vibrates slowly, and the shortest string vibrates very quickly. What conclusion can be made
1. 1 answer
2. 35 views
A television remote control is used to direct pulses of electromagnetic radiation to a receiver on a television. What does this
1. 1 answer
2. 27 views
Which of the following statements best describes the relationship between wavelength and frequency?a The longer the wavelength,
1. 7 answers
2. 30 views
Through which of the following would sound waves travel the fastest?a a railroad track b Earth's atmosphere c a vacuum d a pool
1. 1 answer
2. 26 views
The data shows the speed of sound through air and sea water at 21°C.How does the speed of sound in sea water compare to the
1. 1 answer
2. 53 views
The pictures show four wavelengths of sound.Which line shows the lowest frequency? a X b Y c W d Z
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2. 20 views
What is the difference between a reflected and a diffracted sound wave?a A reflected sound wave bounces back to the place of
1. 1 answer
2. 25 views
A student must create a mode of a lens. The lens must be able to focus light into a small space. Which best describes the type
1. 1 answer
2. 22 views
Some frequencies of ultraviolet light have enough energy to kill bacteria and viruses, but do not have enough energy to
1. 1 answer
2. 28 views
Solve for b5(-b-2)=-4b-9-1 b=
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2. 17 views
Read this word problemOn a cold February morning, Coltan checked the temperature on his phone and saw that it was -3 C. When he
1. 7 answers
2. 68 views
Read this word problemOn a cold February morning, Coltan checked the temperature on his phone and saw that it was -3 C. When he
1. 1 answer
2. 47 views
what is the slope of this line?(-6,6) (-3, 5) y and x-axis
1. 1 answer
2. 23 views
Can you tell me anything you remember learning so far about calculating slope using a line from a graph?
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2. 27 views
Solve for s4=s-2 s=
1. 1 answer
2. 25 views
Performers need to use safety measures to prevent injury or death. What is rigging?* 1 point Safety Nets Using a catcher Safety
1. 3 answers
2. 42 views
How do you write 2.4100 × 1011 in standard form?
1. 1 answer
2. 20 views
How do you write 3.8923 in scientific notation?× 10
1. 1 answer
2. 22 views
How do you write 3.412 × 10–8 in standard form?
1. 1 answer
2. 24 views
How do you write 7.294 × 103 in standard form?
1. 5 answers
2. 24 views
How do you write 0.00000000737 in scientific notation?× 10
1. 1 answer
2. 19 views
How do you write 0.0000000717 in scientific notation?× 10
1. 1 answer
2. 25 views
How do you write 7.34 × 10–2 in standard form?
1. 1 answer
2. 28 views
How do you write 7,400,000,000 in scientific notation?× 10
1. 1 answer
2. 20 views
How do you write 410,000 in scientific notation?× 10
1. 1 answer
2. 21 views
How do you write 28,400,000,000 in scientific notation?× 10
1. 1 answer
2. 21 views
How do you write 2.87 × 10–7 in standard form?
1. 1 answer
2. 22 views
How do you write 5.80 × 100 in standard form?
1. 1 answer
2. 31 views
How do you write 4.796 × 1010 in standard form?
1. 1 answer
2. 25 views
How do you write 836,360 in scientific notation?× 10
1. 1 answer
2. 20 views
How do you write 9.483 × 1015 in standard form?
1. 1 answer
2. 30 views
How do you write 0.00000000004989 in scientific notation?× 10
1. 1 answer
2. 26 views
How do you write 0.00000000026760 in scientific notation?× 10
1. 1 answer
2. 21 views
How do you write 0.00000850 in scientific notation?× 10
1. 1 answer
2. 20 views
How do you write 0.32 in scientific notation?× 10
1. 1 answer
2. 21 views
How do you write 0.0000000008560 in scientific notation?× 10
1. 1 answer
2. 29 views
How do you write 282,000,000 in scientific notation?× 10
1. 1 answer
2. 22 views
How do you write 81,000,000 in scientific notation?× 10
1. 1 answer
2. 26 views
How do you write 7.423 × 10–4 in standard form?
1. 1 answer
2. 30 views
How do you write 7.85 × 106 in standard form?
1. 3 answers
2. 30 views
How do you write 9,458 in scientific notation?× 10
1. 1 answer
2. 21 views

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