SCIENCE
Choose the letter of the correct answer. Write your answer on a separate sheet
1. Why does a car travel faster in going down than in going up?
a. It is moving against gravity b. It is being pushed by the wind
e. It is moving toward the gravity d. It is being pulled by the weight of the
Car
2. Where is the gravitational force directed as you stand on the floor?
a. upward
b. forward
c. bacloward d. downward
3. Which of the following equals the force exerted by the Earth on you?
a. your mass b. your weight c. half your mans d half your weight
4. How distance between two objects affects the pull of gravity?
a. the lesser the distance, the lesser the gravitational pull between them
b. the greater the distance, the lesser the gravitational pull between them
c. the greater the distance, the greater the gravitational pull between them
d. none of these, gravitational pull between them depends on the weights
5. Which is true about mass and gravity?
a. The lesser the mass of the object, the greater the pull of gravity
b. The greater the mass of the object, the lesser the pull of gravity
c. The greater the mass of the object, the greater the pull of gravity.
d. None of these, gravity and mass are not related
6. Which of the following shows the presence of friction?
cars continuously roll down hills
b. things fall off on smooth
surfaces
c. people stay in place as they move d cars stop when the driver steps on
the break
7. What is the direction of the frictional force thar acts on an object moving to the
left?
a. Upward
b. Downward
c. To the right d. To the left
also
8. Which of the following statements is not true about friction?
a. It acts upward opposing the pull of gravity
b. It prevents things from sliding off surfaces
c. It keeps things that are in contact with each other
d. It holds objects that are separated by great distance
9. A delivery man uses a wooden ramp when he delivers thus, packages do not slide
off easily making his work take longer. What would be the best way to make the
packages slide easily?
a. Make his wooden ramp wider
b. Use water on his wooden ramp
c. Use sandpaper to polish and smoothen his ramp
d. Make his wooden ramp narrower
10. Which of the following statements is not true?
a. Friction brings desirable and undesirable effects to objects and people,
b. Friction could be increased by applying lubricants to surfaces.
c. Trains are designed to have aerodynamic shapes to reduce friction so that
air flows smoothly.
d. Rollers reduce friction​