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Physics Introduction
Test Description: Introduction to the forces unit in grade 7 Science
Instructions: Answer all questions to get your test result.
1) A car travels at 120km/h. What does 120km/h describe?
A
the speed of the car
B
the velocity of the car
C
the acceleration of the car
D
the position of the car
2) speed describes the rate at which ___________ changes.
A
distance
B
acceleration
C
time
D
velocity
3) The wind is gusting up to 45 mi/h in a northeasterly direction. The phrase “45 mi/h in a northeasterly direction” describes:
A
the speed of the wind
B
the cause of the wind
C
the direction of the wind
D
the velocity of the wind
4) Which of the following is an example of an acceleration?
A
car speeds up from 0 km/h to 100 km/h in 6 seconds
B
car covers 10 miles of distance every 10 minutes
C
car moves at a constant speed
D
car is at rest
5) We calculate speed by:
A
speed = distance / time
B
speed = distance x time
C
speed = time/distance
D
speed=acceleration/time
6) velocity and speed are
A
the same thing
B
velocity includes speed and direction, speed is just distance/time
C
speed is measured in miles/hour and velocity is measured in m/s
D
speed uses time and velocity does not
7) acceleration is
A
a measure of how an objects speed or direction changes
B
a measure of how much force an object experiences
C
a measure of displacement applied over time
D
a measure of how far an object moves divided by the time it takes it to get there
8) an object moving at a constant speed
A
can be accelerating if it's direction is changing
B
is decelerating
C
is not accelerating
D
is accelerating
9) linear motion is
A
unchanging motion between two points
B
back and forth motion
C
up and down motion
D
continuously changing motion, like how a bumblebee flies
10) the scientific unit for measuring distance is:
A
miles
B
inches
C
metres
D
feet
*select an answer for all questions
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