Worksheets8th Grade CBA Review
Total questions: 44
Worksheet time: 37mins
Name
Class
Date
1.
What is the formula to calculate speed?
a)
S = t/d
b)
S = d/t
c)
S = d x t
d)
S = t x d
2.
What is speed?
a)
how far you go
b)
how much distance is covered over a period of time
c)
how fast you accelerate
d)
the change in the location of a object
3.
A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?
a)
10 m/s
b)
1000 m/s
c)
100 seconds
d)
10 seconds
4.
The correct equation to calculate speed is
a)
distance/time
b)
time/distance
c)
distance x time
d)
distance/time2
5.
Shona cycles at an average speed of 8km/h. How far has she travelled if she cycles for 4 hours?
a)
55km
b)
32km
c)
43km
d)
32miles
6.
Alan travels 100 km in 5hrs. Find his average speed in km/h
a)
5km/hr
b)
10km/hr
c)
50km/hr
d)
20km/hr
7.
Which of the following is a unit of speed?
a)
km/hr
b)
hr
c)
km
d)
s
8.
Which of the following is a unit of distance ?
a)
miles/hr
b)
hr
c)
km
d)
min
9.
Which of the following is a unit of distance ?
a)
miles/hr
b)
mi
c)
s
d)
min
10.
Which of the following is a unit of time?
a)
sec
b)
mi
c)
m/s
d)
km
11.
Which of the following is a unit of speed ?
a)
sec
b)
mi
c)
m/s
d)
min
12.
How far will a person go if they jog for 2 hours at a speed of 12 km/hr?
a)
6 km
b)
0.5 km
c)
10 km
d)
24 km
13.
How far will a person go if they jog for 2 hours at a speed of 12 km/hr?
a)
6 km
b)
0.5 km
c)
10 km
d)
24 km
14.
What is the speed of an object that travels 60 meters in 4 seconds?
a)
240 m/s
b)
15 m/s
c)
0.067 m/s
d)
15 mph
15.
Dave runs a 400 m race with a speed of 4 m/s. What time will it take him to finish the race?
a)
400 minutes
b)
100 minutes
c)
100 seconds
d)
.25 seconds
16.
Speed is equal to
a)
Distance/Time
b)
Time/Distance
c)
Time x Distance
d)
Acceleration
17.
What is the speed of a man who runs 10 miles in 1 hr?
a)
20 miles
b)
10 m/min
c)
10 miles/hr
d)
20 hrs
18.
My cat eyeballs the christmas tree and decides to apply all of his mass directly to the center of the tree. This force causes the tree to accelerate down towards the ground.
a)
Law of Inertia
b)
Law of Acceleration
c)
Law of Conservation of Momentum
19.
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
20.
A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't.
a)
The Law of Inertia
b)
The Law of Acceleration
c)
The Law of Conservation of Momentum
21.
I crack an egg on the edge of a bowl. The force applied to the egg is the same as the force applied to the bowl.
a)
Law of Inertia
b)
Law of Acceleration
c)
Law of Conservation of Momentum
22.
Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more inertia.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
23.
A soccer ball accelerates more than a bowling ball when thrown with the same force.
a)
Law of Inertia
b)
Law of Acceleration
c)
Law of Conservation of Momentum
24.
A student leaves a pencil on a desk and the pencil stays in the same spot until another student picks it up.
a)
Law of Inertia
b)
Law of Acceleration
c)
Law of Conservation of Momentum
25.
This person bought coffee and put it on the seat next to them. If they stopped quickly and the coffee spilled which law would that represent?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
26.
When you step on a Lego. You push on the Lego and the Lego pushes back on you.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
27.
Which type of plate boundary would cause folded mountains to form?
a)
transform
b)
convergent
c)
divergent
d)
subduction
28.
The Great Rift Valley in Africa and the Mid-Atlantic Ridge were both created by this type of plate boundary.
a)
divergent
b)
convergent
c)
transform
d)
subduction
29.
What are the two types of crust?
a)
continental and oceanic
b)
ocean and basin
c)
lower and upper
d)
thick and thin
30.
What drives tectonic plate movement?
a)
gravity
b)
coriolis effect
c)
convection currents
d)
the earth's magnetic core
31.
Earthquakes and volcanoes are most likely found in which locations?
a)
at plate boundaries
b)
in oceans
c)
in the middle of continents
d)
in the middle of plates
32.
Transform boundaries are most likely to produce what phenomenon?
a)
volcanoes
b)
deep sea trenches
c)
underwater mountain ranges
d)
earthquakes
33.
When an oceanic plate and a continental plate collide, which one will subduct?
a)
oceanic
b)
continental
c)
neither
d)
both
34.
Two tectonic plates collide at a ___ plate boundary.
a)
convergent
b)
divergent
c)
transform
d)
transformer
35.
This land form can occur at a divergent plate boundary.
a)
trench
b)
mid-ocean ridge
c)
folded mountains
d)
fault
36.
According to Wegener's hypothesis of continental drift,
a)
Earth's surface is made up of seven major landmasses
b)
the continents DO NOT move
c)
Earth is slowly cooling and shrinking
d)
the continents were once joined together in a single landmass
37.
What is Pangaea?
a)
the name of a German scientist
b)
the name of the super-continent that existed millions of years ago
c)
another name for continental drift
d)
the name of an ancient fossil
38.
What type of evidence was NOT used by Alfred Wegener to support his continental drift hypothesis?
a)
evidence from landforms
b)
evidence from fossils
c)
evidence from human remains
d)
evidence from climate
39.
Most geologists rejected Alfred Wegener's idea of continental drift because...
a)
it did not agree with their current theory
b)
Wegener was interested in what Earth was like millions of years ago
c)
Wegener used several different types of evidence to support his hypothesis
d)
Wegener could not identify the force that moved the continents
41.
In Seafloor Spreading, molten material rises from the mantle and erupts or flows out
a)
along the edges of all the continents
b)
along mid-ocean ridges
c)
in the deep ocean trenches
d)
in the north and south poles
41.
In Seafloor Spreading, molten material rises from the mantle and erupts or flows out
a)
along the edges of all the continents
b)
along mid-ocean ridges
c)
in the deep ocean trenches
d)
in the north and south poles
42.
How did scientists discover that rocks farther away from mid-ocean ridges were older than those near it?
a)
by observing eruptions of molten material on the seafloor
b)
by mapping rocks on the sea floor using sonar
c)
by determining the age or rock samples obtained by drilling on the seafloor
d)
by measuring how fast seafloor spreading occurs
43.
The process by which the ocean floor sinks beneath a deep ocean trench and back into the mantle is known as
a)
convection
b)
continental drift
c)
subduction
d)
conduction
44.
A place where two plates slide past each other, moving in opposite directions, is known as a
a)
transform boundary
b)
divergent boundary
c)
convergent boundary
d)
rift valley
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