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26The weather map below shows a low pressure system in the northeast and a high pressure system in the northwest moving toward
1. 1 answer
2. 3 views
A student built a model to show a scientific process. A picture of her model is shown below.a large ball in the middle of a
1. 1 answer
2. 8 views
According to an August 2011 report from the government research laboratory known as NOAA-ESRL, the amount of carbon dioxide in
1. 1 answer
2. 11 views
The diagram below shows the development of a warm front.Modified from image courtesy of NWS/NOAA Which of the following best
1. 1 answer
2. 5 views
For a science project, John wants to build a model of the Solar System that is roughly to scale. For the Earth, he uses a shot
1. 1 answer
2. 6 views
The diagram below shows the geologic time scale, which separates Earth's history into different eons, eras, periods, and epochs.
1. 1 answer
2. 4 views
19The diagram below represents a series of rock layers. Each different type of shape shown in the layers represents a fossil of
1. 1 answer
2. 3 views
The diagram below illustrates the major stages of the water cycle.Which of the following mainly drives surface runoff? A.
1. 1 answer
2. 3 views
The diagram below illustrates the major steps of the water cycle.Which of the following steps occurs as heat from the Sun causes
1. 1 answer
2. 4 views
14The movement of the planets and other celestial bodies in the Solar System is caused by A. gravitational forces from the Sun.
1. 1 answer
2. 8 views
The picture below shows a solar eclipse as seen from Earth.How must the Sun, Earth, and Moon be positioned to produce the solar
1. 1 answer
2. 6 views
12The diagram below shows the formation of a volcanic arc. This arc was formed as a result of an oceanic plate moving underneath
1. 1 answer
2. 3 views
Chemicals, garbage, and waste from power and manufacturing plants can often end up in Earth's oceans.polluted ocean water Image
1. 1 answer
2. 5 views
The diagram below illustrates the total amount of energy that reaches Earth from the Sun and how this energy is distributed.Whic
1. 1 answer
2. 3 views
The diagram below shows the basic materials and processes involved in the rock cycle.Which of the following processes is
1. 1 answer
2. 7 views
The image below shows a mid-ocean ridge.Image courtesy of NASA GSFC How are the sections of oceanic crust on either side of the
1. 1 answer
2. 4 views
The diagram below shows the basic materials and processes involved in the rock cycle.Based on the diagram, which of the
1. 1 answer
2. 6 views
The image above shows a _______, which is an icy body that orbits the Sun in a highly elliptical path.A. comet B. meteor C.
1. 1 answer
2. 7 views
Most scientists agree that all of today's continents were part of a single continent known as Pangaea around 250 million years
1. 1 answer
2. 7 views
An engineer has created a new design for the pipe systems in homes. In this design, pipes are joined together with flexible
1. 1 answer
2. 6 views
The following maps show the severity of droughts across the United States in September of 2007 and the locations of wildfires in
1. 1 answer
2. 3 views
Shale is a relatively impermeable type of rock, while sandstone is permeable to water. In some areas, the ground is made of
1. 1 answer
2. 8 views
Which of these processes takes place over the largest scale in terms of size?A. formation of ocean basins B. formation of
1. 1 answer
2. 5 views
A student went outside every night for eight nights to look at the Moon. The pictures below show how the Moon looked each night.
1. 1 answer
2. 8 views
The diagram below shows the development of a warm front.Modified from image courtesy of NWS/NOAA Which of the following best
1. 1 answer
2. 7 views
The diagram below shows the basic materials and processes involved in the rock cycle.Based on the diagram, which of the
1. 1 answer
2. 7 views
The diagram below shows the basic materials and processes involved in the rock cycle.Which of the following processes is
1. 1 answer
2. 13 views
The diagram below illustrates the total amount of energy that reaches Earth from the Sun and how this energy is distributed.Whic
1. 1 answer
2. 2 views
The diagrams below represent the atoms or molecules that make up four different substances.Which of the following is true? A.
1. 1 answer
2. 3 views
A teacher sets up two identical beakers of water in science class.The teacher heats both beakers. She adds more energy to beaker
1. 1 answer
2. 8 views
The diagram below shows a wave.Which of the following would definitely increase the energy of the wave? A. increasing the
1. 1 answer
2. 4 views
adie has built a ball-and-stick model of a water molecule.ball and stick model of a water molecule Sadie's model is useful, but
1. 1 answer
2. 5 views
The diagram below shows a wave with its wavelength indicated in red.Which of the following would happen if the wavelength of
1. 1 answer
2. 5 views
Two solar powered toy cars are shown below.Car A has a mass of 0.245 kg and travels at a speed of 10 cm/s. Car B has a mass of
1. 1 answer
2. 5 views
A student is conducting an investigation on energy transfer. She places three hot objects of the same mass into equal masses and
1. 1 answer
2. 3 views
Rodrigo designed an airtight and watertight pouch. He put a carefully measured amount of a chemical called ammonium chloride in
1. 1 answer
2. 5 views
Susan was traveling in an airplane. She looked out of a window in the airplane and saw clouds in the sky.Why could Susan see
1. 1 answer
2. 4 views
Gavin learns in science class that small objects such as meteoroids and debris can move through space at such high speeds that
1. 1 answer
2. 4 views
Ava made a device that contains two chemicals: lye and a strong acid. When she activates the device, the acid is added to the
1. 1 answer
2. 3 views
3The diagram below shows a substance undergoing a phase change. The substance is changing from a solid to a liquid. Which of the
1. 1 answer
2. 6 views
A metal block is sliding along an infinite, frictionless, horizontal plane. There are only two forces acting on the metal block:
1. 1 answer
2. 7 views
Alice builds an electric motor by positioning an electromagnet between the poles of a permanent magnet. The electromagnet spins
1. 1 answer
2. 7 views
Models of three chemical structures are shown below.Which statement about the models is true? A. X represents an atom, Y
1. 1 answer
2. 8 views
Susan was traveling in an airplane. She looked out of a window in the airplane and saw clouds in the sky.Why could Susan see
1. 1 answer
2. 4 views
Two balloons are rubbed with wool, giving each a negative charge. The balloons are then attached to a table using tape and
1. 1 answer
2. 8 views
Ike conducted a scientific experiment involving clear adhesive tape. He removed two strips from a roll of adhesive tape. Then,
1. 1 answer
2. 8 views
The diagram below shows a substance undergoing a phase change. The substance is changing from a solid to a liquid.Which of the
1. 1 answer
2. 7 views
A metal block is sliding along an infinite, frictionless, horizontal plane. There are only two forces acting on the metal block:
1. 1 answer
2. 12 views
Which of the following statements correctly describes a difference between mechanical waves and electromagnetic waves?A.
1. 1 answer
2. 7 views
The diagram below shows a wave.Which of the following would definitely increase the energy of the wave? A. increasing the
1. 1 answer
2. 3 views
Two solar powered toy cars are shown below.Car A has a mass of 0.245 kg and travels at a speed of 10 cm/s. Car B has a mass of
1. 1 answer
2. 7 views
A teacher sets up two identical beakers of water in science class.The teacher heats both beakers. She adds more energy to beaker
1. 1 answer
2. 8 views
Sadie has built a ball-and-stick model of a water molecule.ball and stick model of a water molecule Sadie's model is useful, but
1. 1 answer
2. 4 views
Rodrigo designed an airtight and watertight pouch. He put a carefully measured amount of a chemical called ammonium chloride in
1. 1 answer
2. 4 views
The table below shows the varying distances between pairs of atoms with the same electric charge and magnitude.Pair of Atoms
1. 1 answer
2. 4 views
Paige received two 10 mL samples of unknown liquids from her teacher. She combined the substances according to her instructions
1. 1 answer
2. 4 views
The image below shows models that represent the reactants and products of a chemical reaction.Reactants Products Based on the
1. 1 answer
2. 3 views
Four objects are orbiting a star along the same path. The objects are at the same distance from the star, and their masses are
1. 1 answer
2. 5 views
Which of the following statements correctly describes a difference between mechanical waves and electromagnetic waves?A.
1. 1 answer
2. 6 views
Gavin learns in science class that small objects such as meteoroids and debris can move through space at such high speeds that
1. 1 answer
2. 3 views
The diagram below shows sound waves hitting the surface of a body of water and bouncing back off.Which of the following best
1. 1 answer
2. 4 views
A metal block is sliding along an infinite, frictionless, horizontal plane. There are only two forces acting on the metal block:
1. 1 answer
2. 7 views
The diagram below shows a wave with its wavelength indicated in red.Which of the following would happen if the wavelength of
1. 1 answer
2. 4 views
The diagram below shows a substance undergoing a phase change. The substance is changing from a solid to a liquid.Which of the
1. 1 answer
2. 8 views
The table below shows the varying distances between pairs of atoms with the same electric charge and magnitude.Pair of Atoms
1. 1 answer
2. 4 views
Rodrigo designed an airtight and watertight pouch. He put a carefully measured amount of a chemical called ammonium chloride in
1. 1 answer
2. 4 views
Scary Harry's has identified that the cost of a new computer will be $48,000, but with the use of the new computer, net income
1. 4 answers
2. 125 views
when is the instantaneous rate of change of f(x) = 0.5 (2x)whose graph is shown below, equal to zero?
1. 1 answer
2. 90 views
A double-slit experiment uses coherent light of wavelength 633 nm with a slit separation of 0.100 mm and a screenplaced 2.0 m
1. 2 answers
2. 1,098 views
(2**) ***- Enter 2 missing digits at index 4 from end_ _ 21
1. 10 answers
2. 4,430 views
2/3 cups of milk are required for 6 pancakes.a. How much milk is needed to make 1 pancake?
1. 3 answers
2. 1,180 views
What type of a social scientist would research "where does the most crime happen in the world"?
1. 4 answers
2. 388 views

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