1ST SUMMATIVE TEST 3RD GRADING PERIOD SCIENCE 6
I. Read carefully the following statement then choose the letter of the correct answer
1. What happens to a falling object when air résistance balances the gravitational attraction?
a. The falling object will move faster upon reaching the ground.
b. The falling object will move slowly upon reaching the ground,
c. The falling object will float unto the air and stay there in a long time.
d. The falling object will move high up in the sky.
2. When friction is said to be decreases?
a. An object moves in a flat and smooth surface.
b. An object moves on a rough surface
C. An object moves on an inclined surface
d. An object moves downward
3. The teacher requires her pupils to wear a rubber shoes during their P.E. class why?
a. rubber shoes decreases the friction when it rubbed on a smooth floor.
b. smooth and shiny floor needs a leather shoes to increase the friction
c. rubber shoes increases the friction when you stop on a smooth surface.
d. wearing rubber shoes makes the pupils neat and clean.
4. Which of the following is true?
1. Friction slows down a moving object. III. Objects move slowly on a rough surface.
II. Smooth surface has more friction.
IV. Friction is not present in a smooth surface.
A. 1,11
B. 11,111
C. 1,111
D.1,111,1V
5.Why is it easy to slip when there is water on a smooth floor?
A. The water is a lubricant and reduces the friction between your feet and the floor
B. The friction between your feet and the floor changes from kinetic to static friction
C. The water increases the friction between your feet and the floor.
D. The friction between your feet and the floor changes from sliding.
6. Why do we use oil on hinges of the rusty windows?
A. To reduce friction and can open the window easily.
B. To reduce friction and preserve the window.
C. To increase friction and stop rusting.
D. To remove friction in the windows
rubbing together of two surfaces. What is the​