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Worksheets2nd 9 WK Mid Assessment CORRECTIONS
Total questions: 16
Worksheet time: 8mins
Which statement describes an action that most likely resulted in a chemical reaction?
A pan of water was heated on a stove, and steam formed.
A liquid was mixed with another liquid, and a precipitate formed.
A liquid was sprayed into the air, and a sweet odor was smelled.
A child blew through a wand filled with soap, and bubbles were produced.
In the equation above, how many atoms are in the oxygen molecule?
2
0
1
4
Four students designed and built air propelled rockets that were launched into the air. Their data are recorded in the table.
Which rocket had the greatest acceleration?
Rocket 1
Rocket 2
Rocket 3
Rocket 4
Two solutions are mixed and react to produce the solid precipitate AgCl. The chemical reaction is shown by the balanced chemical equation.
What happens to the total mass as the reaction takes place?
The mass increases.
The mass decreases.
The mass remains constant.
The mass first decreases and then increases.
A student pushes a 51.5 kilogram bookshelf across a smooth floor with a net force of 67 N.
What is the approximate acceleration of the bookshelf?
1.3 m/s2
3,450.5 m/s2
15.5 m/s2
0.77 m/s2
How many atoms are in one molecule of baking soda, NaHCO3? Record your answer. Be sure to use the correct place value.
9
3
6
4
Which of the digestive processes above will be found in the chemical change section of the Venn diagram shown above?
II only
II, III, IV
III, IV
IV only
Which of these landforms is most likely to be found at a convergent boundary?
Fault line
Mid-ocean ridge
Mountain
Rift valley
A student pushes a box with a force of 16 N to the left. Another student pushes the same box from the opposite side with a force of 8 N to the right.
According to the above information and diagram, what will be the result?
The box will move to the right with an 8 N force.
The box will move to the right with a 24 N force.
The box move to the left with a 2 N force.
The box move to the left with an 8 N force.
Students create a table that lists processes observed in nature.
Which process describes only a physical change?
Process 1
Process 2
Process 3
Process 4
A steel ball is at one end of a box that is moving forward as shown. The box suddenly stops.
According to Newton’s first law, what happens to the steel ball just after the box stops?
Because of friction, the ball continues rolling forward at the same speed.
Because of friction, the ball rolls forward at an increased speed.
Because of inertia, the ball continues rolling forward at the same speed.
Because of inertia, the ball rolls forward at an increased speed.
The energy related to the motion of an object is called —
potential energy
kinetic energy
electrical energy
chemical energy
The table shows the motion data for two objects during two trials of an investigation.
Which object travels at the greater average speed?
Object 1, because it travels the greater distance per unit of time
Object 1, because it travels the longer amount of time
Object 2, because it travels the shorter amount of time
Object 2, because it travels the shorter distance per unit of time
Students push a cart along a smooth floor and collect data to produce the graph shown.
The students use this data to determine and graph the velocity of the cart.
Which graph accurately represents the velocity of the cart?
A snowboarder practices sliding down a hill. The diagram shows three positions of the snowboarder.
Which table best compares the amounts of potential energy and kinetic energy of the snowboarder at each position?
The diagram represents several plate boundaries and the common crustal features that result from tectonic activity.
Which letter represents a divergent plate boundary in the above image?
W
X
Y
Z
