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WorksheetsiLEAP Prep
Total questions: 20
Worksheet time: 11mins
Name
Class
Date
1.
A student placed two different blocks in the container of water as shown. What can she conclude from her experiment?
a)
block 1 is less dense than block 2
b)
block 2 is less dense than block 1
c)
both blocks have the same density
d)
both blocks are denser than water
2.
Which instrument would you most likely use to measure the distance that a ball rolls down a ramp?
a)
beaker
b)
stirring rod
c)
ruler
d)
spring scale
3.
Why is it important for scientists to tell other scientists about the experiments they conduct and the discoveries they make?
a)
to allow friendly competition between scientists
b)
so they can celebrate scientific progress together
c)
to allow scientists a chance to review one another's work
d)
so scientists can get recognition for the work that they do
4.
What information is needed to track the velocity of ocean currents?
a)
the mass of the water & its speed
b)
the speed of the current & the direction in which it is moving
c)
the distance the current has traveled & the water's mass
d)
the distance the current has traveled & the direction it is moving
5.
Vinegar is added to a beaker of baking soda & water. If the reaction is exothermic, what will happen?
a)
volume of the liquid will decrease
b)
volume of the liquid will increase
c)
temperature of the liquid will decrease
d)
temperature of the liquid will increase
6.
Which statement best describes why a white coffee mug appears white?
a)
most of the light that strikes the mug is absorbed
b)
most of the light that strikes the mug has the same wavelength
c)
most of the light that strikes the mug is reflected
d)
most of the light that strikes the mug passes through it
7.
Sunlight passes through the glass of a greenhouse and the air inside heats up. Which is the energy transformation that occurs?
a)
heat to mechanical
b)
light to heat
c)
heat to light
d)
light to mechanical
8.
Energy from the sun reaches this plant by which mechanism?
a)
conduction
b)
convection
c)
radiation
d)
refraction
9.
Which is most likely true about the kinetic energy & potential energy of a boulder sitting on top of a hill?
a)
the PE is 0 J & the KE is 1,000 J.
b)
the PE is 1,000 J & the KE is 0 J
c)
the PE is equal to the KE
d)
the boulder has only KE
10.
What will happen to a rolling soccer ball if no other force interacts with it?
a)
it will eventually stop
b)
it will continue rolling in a straight line at a constant speed
c)
it will continue rolling in a straight line as it slows down
d)
it will curve around Earth at a constant speed
11.
What is the average atomic mass for krypton?
a)
18
b)
36
c)
41.9
d)
83.8
12.
You are pushing 30 N east and your friend is pulling in the opposite direction, 40 N west. What is your net force?
a)
10 N west
b)
10 N east
c)
70 N west
d)
70 N east
13.
This variable in an experiment is the one being deliberately changed by the scientist.
a)
dependent variable
b)
independent variable
c)
data
d)
control group
14.
Which statement is a description rather than an explanation?
a)
the density of gold is 19.28 g/cm3
b)
the branch fell from the tree by the force of gravity alone
c)
ionic bonds form because ions with opposite charges are attracted to each other
d)
the white substance that appeared indicated that a precipitate had formed
15.
During which interval is the object speeding up?
a)
A to B
b)
B to C
c)
D to E
d)
E to F
16.
What is the atomic number for an element with three protons?
a)
2
b)
1
c)
3
d)
6
17.
An atom's mass number equals the number of...
a)
protons plus the number of electrons
b)
protons plus the number of neutrons
c)
protons
d)
neutrons
18.
Goggles must be worn when using:
a)
fire.
b)
glassware.
c)
chemicals.
d)
All of the above.
19.
What is the CORRECT procedure for students to follow if a chemical is spilled?
a)
Stand back and advise the teacher of the spill.
b)
Run madly out of the room.
c)
Splash large amounts of water onto the spill.
d)
Immediately ask to go to the restroom.
20.
Is this ionic bond drawn correctly?
a)
Yes
b)
No
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