Third Quarter Pretest in Science 7
Quiz by Kimberly A. Regollen
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- Q1
When is an object considered to be in motion?
I. When its position changes with respect to a point of reference.
II. When its distance changes with respect to a point of reference.
III. When its direction changes with respect to a point of reference.
I and III only
I and II only
II and III only
I, II and III
30s - Q2
The Philippine Eagle accelerates from 26 m/s to 47 m/s in 7 seconds. What is the eagle’s average acceleration?
It moves with decreasing acceleration
It is moving backward.
It is moving backward.
It is moving backward.
15s - Q3
A car is moving with an acceleration of -25 m/s2. How do you describe the motion of the car?
It is moving forward
It moves with decreasing acceleration
It is moving backward.
It moves with increasing acceleration.
15s - Q4
If a bus travels at a distance of 700m in 20s, what is the speed of the car?
35 m/s
14000 m/s
720 m/s
350 m/s
15s - Q5
You walked from your house to the main gate 3 m/s North. Which of the following quantities is used to describe your motion?
speed
velocity
displacement
acceleration
15s - Q6
Which of the following DOES NOT describe an accelerating object?
The speed is constant with changing direction
The speed and direction are constant.
There is a change in speed of an object.
There is a change in direction of an object.
15s - Q7
Mang Victor is driving his car and would like to cross the road when a cat suddenly jumps on the road 5 meters before him. Describe the motion of Mang Victor’s car.
It is accelerating.
It is decelerating.
Its direction remains the same.
Its speed is still constant.
15s - Q8
The object is in motion when there is a change in position over time with respect to a reference point. Which of the following objects is in motion?
Glass of water on the table
Parked car
Rolling ball
A picture frame on the wall
15s - Q9
If the speed of an object is 20m/s for 4 minutes, what can be inferred about the motion of the object?
Insufficient Data
Constant motion
Decelerating
Accelerating
15s - Q10
How can you describe the movement of the vibrations of a transverse wave?
In the same direction as the wave travels.
At right angles to the direction of wave travel
Opposite to the direction of wave travel.
Above and below the moving wave.
15s - Q11
Which of the following waves is characterized by compressions and rarefactions?
transverse waves
electromagnetic waves
longitudinal waves
Light waves
15s - Q12
Which of the following is considered as the highest point of a wave?
amplitude
crest
trough
frequency
15s - Q13
The frequency of a wave is 2 beats per second. What is the velocity of a wave if its wavelength is 4m?
3m/s
4m/s
8m/s
10m/s
15s - Q14
Which of the following is the region in the sound waves where molecules are bunched closer together?
Interference
Rarefaction
Compression
Polarization
15s - Q15
Which of the following explain that a soundwave is a longitudinal wave?
The wave has a very low frequency.
The period of the wave is very long.
The disturbance moves in the same direction as the wave
The disturbance moves perpendicular to the wave.
15s