Worksheetsscience grade 4 3rd quarter review
Total questions: 44
Worksheet time: 23mins
1. A kilo of nails needs more force for it to be lifted than a kilo of cotton balls
TRUE
FALSE
2. When you slide a heavy wooden box across a rough floor, it will:
move a shorter distance
move a longer distance
move continuously
break due to your force
3. Pushing a refrigerator requires less force than pushing a bicycle
TRUE
FALSE
4. Speed is the amount of force applied to an object
TRUE
FALSE
5. All kinds of materials are magnetic.
TRUE
FALSE
6. Nickel is another popular magnetic metal with ferromagnetic properties
TRUE
FALSE
7. The strongest part of a magnet is concentrated at the poles.
TRUE
FALSE
8. A horseshoe shape is considered the strongest and can be very useful to create if you want to lift heavy objects or want to make a bar magnet stronger because The strongest part of a magnet is concentrated at the poles.
TRUE
FALSE
9. The arrows always start at the magnet's north pole and point towards its south pole. When two like-poles point together, the arrows from the two magnets point in OPPOSITE directions and the field lines cannot join up. So the magnets will push apart (repel)
TRUE
FALSE
10. ______________ are items with poles and a magnetic field.
Forces
Magnets
speed
motion
11. If two south poles of 2 hanging magnets are close to each other, they:
attract
repel
remain at rest
attract then repel
12. Magnet A is 5 centimeters away from plastic beads while Magnet B is 10 centimeters away from plastic beads. Which statement is possible to happen?
Magnet A will attract fewer plastic beads than Magnet B.
Magnet B will attract more plastic beads than Magnet A.
Magnet A will attract more plastic beads than Magnet B.
Plastic beads will neither be attracted to Magnet A or B.
13. A scooter moves with a speed of 30 m per minute. A car moves with a speed of 60 m per minute. Which statement is correct?
A scooter moves faster than a car
A car moves faster than a scooter.
They have the same speed.
The car moves slower than a scooter.
14. If a cheetah can run at a speed of 97 kilometers per hour. How long can cheetah run for 1 hour?
48 kilometers
97 kilometers
100 kilometers
194 kilometers
When an object is in motion, it changes ___.
shape
size
position
color
A space shuttle started launching into space. It used a lot of force to fly up toward space. In which direction was the opposite force going?
up
down
right
left
17. The heavier the object, the more force is applied.
TRUE
FALSE
18. A light weight object travels much faster than a heavier object on a slope surface
TRUE
FALSE
19. Road speed limits are used in most countries to set the legal maximum or minimum speed at which road vehicles may travel on a given road.
What danger might happen if the driver drives beyond the speed limit?
possibly get into accident
stop
broke the car
loss speed
20. Which statement is TRUE about the forms energy?
It allows us to see.
The ability to do work.
It cannot be transformed.
It is found only in the Sun.
21. It is a form of energy that we can hear
potential
kinetic
sound
electrical
22. It is a form of energy that makes things hot
light
heat
kinetic
chemical
23. A rolling bowling ball has:
chemical potential energy
gravitational potential energy
kinetic energy
elastic potential energy
24. Candles, milk, rice and coal have stored energy called:
chemical
elastic potential
gravitational
heat
25. Which form of energy is NOT found in a toaster?
heat
light
kinetic
electrical
26. A pull rope band possesses a/an:
gravitational potential energy
elastic potential energy
chemical potential energy
light energy
27. To communicate, inform and entertain people, we use this form of energy.
light
sound
potential
kinetic
28. The lion stays at the edge of a high cliff. It stores energy called:
elastic potential
gravitational potential
kinetic
sound
Which statement about light is INCORRECT?
Light is a form of energy.
Light travels in straight line.
Light travels in up and down motion
30. What happens when light bounces off the surface of an object?
reflect
dissolve
bend
absorb
31. Which object reflects light energy?
a plane mirror
a stone
a clear glass
a wooden door
32. For safety and protection, the walls and doors of the house should be made of ________materials.
transparent
translucent
opaque
clear
33. Wearing of sunglasses can protect the eyes from the light of the Sun because it:
allows all light rays to pass through it
does not allow light to pass through it
allows a little amount of light to pass through it
reflects the light from the Sun
34. What form of energy is most useful to you? Why?
(a)
35. It refers to the highness or lowness of sound
Intensity
decibel
pitch
volume
36. Low-pitched sound is produced when:
Objects are light
The object vibrates quickly
the object vibrates slowly.
the object is hit harder
37. We can decrease the pitch of a guitar string by:
increasing the tightness of a string
decreasing the tightness of a string
plucking the string quickly
plucking the string harder
38. The intensity of a sound is the:
highness or lowness of sound
sharpness of sound
variations of sound
loudness of sound
39. Compare 10 decibel and 20 decibel
20 decibel is 5x louder than 10 decibel
20 decibel is 10x louder than 10 decibel
10 decibel is 5x louder than 20 decibel
10 decibel is 10 x louder than 20 decibel
40. What is the possible intensity of normal conversation?
150 dB
100 dB
60 dB
0 dB
41. Bob uses a tambourine. What can he do to produce a soft sound?
shake it harder
shake it gently
change the parts
hit it on the wall
42. Which can produce noise pollution?
driller
fan
water waves
whispering
43. Which statement about sound is NOT TRUE?
Sound is a form of energy.
Sound can travel in a vacuum.
Sound can travel in solid, liquid and gas
Sound is produced by vibrating objects.
44. Which one cannot produce sound?
snoring
thinking
dancing
typing
