WorksheetsPS Midterm Section 1
Total questions: 33
Worksheet time: 12mins
If you do not understand a direction or part of a lab procedure, you should ______.
figure it out as you do the lab
try several methods until something works
ask the teacher before proceeding
skip it and go on to the next part
The correct way to hold a test tube when heating it is to _______.
point it straight up
point it horizontally
point it away from yourself and others
point it straight at yourself
What is the difference between Earth's rotation and revolution?
Revolution refers to Earth's spinning on its axis, and rotation refers to Earth's orbiting around the Sun.
Rotation refers to Earth's spinning on its axis, and revolution refers to Earth's orbiting around the Sun.
Revolution refers to Earth's spinning on its axis, and rotation refers to Earth's changing seasons.
Rotation refers to Earth's spinning on its equator, and revolution refers to Earth's orbiting around the solar system.
When you decide whether or not the data supports the original hypothesis, you are ____.
asking questions
making observations
forming a hypothesis
drawing conclusions
All of the following can be found on the periodic table except for ________.
the symbol
where the element was found
atomic number
element name
As a sample of matter is heated, its particles ________.
move more quickly
are unaffected
stop moving
move more slowly
Four students each measured the mass of one 1.43 g sample four times. The results in the table above indicate that the data collected by ____ reflect the greatest accuracy and precision.
Student A
1.43 g
1.52 g
1.47 g
1.42 g
Student B
1.43 g
1.40 g
1.46 g
1.44 g
Student C
1.54 g
1.56 g
1.58 g
1.50 g
Student D
0.86 g
1.24 g
1.52 g
1.42 g
Student A
Student B
Student C
Student D
Susan was given the following number to convert to scientific notation: 12,050,000
Her answer was 1.25 x 107, but it was marked wrong on her paper. Why?
She used a positive exponent when she should have used a negative exponent.
She left out a zero in between the two and the five.
She was not supposed to have a number in front of the decimal point.
She should have used a four as her exponent because there are four zeros on the end of the number.
During several trials, a group of scientists tests the reaction of a new medicine on a strain of bacteria. Which step is essential for proving the validity of the results?
Make the process public so the results can be replicated.
Change the procedure to check whether the same results take place.
Have another scientist check to make sure the medicine was properly produced.
Have each group member use a different medicine and see what happens when they test it on the bacteria.
Police officers use a special device to determine the speed of cars traveling on the highway. This device works by sending a wave toward the car, detecting its reflection, and measuring subtle compressions and rarefactions in the reflected wave. This device relies on ____.
the Doppler effect
acoustics
beats
a fundamental frequency
Of the following elements, which one would have the largest electronegativity energy?
iodine (I, atomic #53)
chlorine (Cl, atomic #17)
bromine (Br, atomic #35)
fluorine (F, atomic #9)
After scientists analyze the results and draw conclusions of their experiments, they _______.
form a hypothesis
include a control
communicate those results to other people
choose the variables they want to test
Fluorine, F, forms a binary ionic compound with lithium, Li. What is the name of this compound?
fluorine lithide
lithium fluorine
lithium fluoride
fluorine lithium
John wanted to find out which
laundry soap was best for removing grass stains. Each soap was mixed with warm
water. It was then used to scrub a piece of grass-stained cloth for 1 minute.
Then the amount of stain left on the cloth was measured. What is the independent (manipulated) variable?
scrubbing time
water temperature
amount of water
type of laundry soap
It is generally believed that catalysts increase reaction rates by ______.
removing the activation energy
providing an alternate activation energy barrier that is lower than the original barrier
lowering the activation energy
giving the reacting particles more energy, thus there will be more successful collisions
The sample contained the same number of pennies for which two years?
1988 and 1992
1988 and 1991
1994 and 1997
1994 and 1998
Which substance is MOST soluble at 0 ºC?
KI
NaNO3
NaCl
Ce2(SO4)3
In left-right reversal of a mirror, the word ‘SCIENCE’ would appear as ____.
If a young man compliments a young lady on her beautiful brown eyes, what part of the eye is he describing?
The following is a picture of what type of mirror?
convex mirror
prism mirror
concave mirror
flat mirror
Indicate, from fastest to slowest, how sound travels through the following mediums.
All the bulbs shown in the diagram are lit. The light bulb at F is removed. How are the other light bulbs affected by removing light bulb F?
All the other light bulbs stay lit.
Light bulb H goes out.
Both light bulbs E and H go out.
All the other light bulbs get brighter.
Of all the electromagnetic waves, those with highest energy are ____ and those with lowest energy are ____ .
Visible light; x-rays
x-rays; infrared waves
What type of interference is represented in this diagram?
Seismic interference
You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?
60 N to the left
Which of these forms of water has the greatest kinetic energy?
condensing water
boiling water
freezing water
melting water
The gravitational force between two objects depends on what?
mass and distance
weight and distance
weight and mass
mass and velocity
The angle of reflection is ____.
70 degrees
110 degrees
35 degrees
55 degrees
Which of the following statements does not describe force?
A force causes objects at rest to remain stationary.
A force causes objects to start moving.
A force causes objects to stop moving.
A force causes objects to change direction.
In an experiment that determines how adding heat to gas changes the volume of the gas, which would be a correct statement?
The volume of gas is the independent variable, and the temperature is the dependent variable.
The volume of gas is the dependent variable, and heat is the independent variable.
The temperature is dependent on the amount of gas.
The amount of heat is independent of the volume of gas.
What property of the wave is labeled G?
wavelength
trough
amplitude
crest
Tony found an old iron cannonball that had rust on it. He determined that the iron had been exposed to air and water, which caused the rust. Which statement explains the type of change represented by this reaction?
The reaction represents a chemical change because the iron oxide has a different melting point than iron.
The reaction represents a physical change because both the original cannonball and the rusted cannonball are solids.
The reaction represents a chemical change because iron oxide is a new substance formed on the cannonball.
The reaction represents a physical change because the rust is just a mixture of water and iron.
Janet shines a ray of white light into a glass prism. Which statement explains why she sees a rainbow come out of the prism?
The prism reflects the white light and refracts the rest of the color spectrum.
The different wavelengths of the color spectrum are refracted at different angles by the prism.
The prism refracts only the white light, and the rest of the colors pass through.
The different wavelengths of the color spectrum are absorbed at different angles and released at different angles.
