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OAE MIDDLE GRADES SCIENCE PRACTICE QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES 2025/2026 (VERIFIED ANSWERS) |ALREADY GRADED A+
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OAE MIDDLE GRADES SCIENCE PRACTICE QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES 2025/2026 (VERIFIED ANSWERS) |ALREADY GRADED A+

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  • November 16, 2024
  • 20
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • oae
  • a 100g pattern of water is taken from 3 extraordin
  • 12n 8kga a12kg x ms2 divided by way of 8k

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  • OAE
  • OAE

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OAE MIDDLE GRADES SCIENCE
PRACTICE

A 100g pattern of water is taken from 3 extraordinary resources and decomposed through
electrolysis. For all three samples, the ratio of the mass of hydrogen to the mass of oxygen is
observed to be eleven:89. These effects are first-rate explained via the regulation of:

A. Conservation of mass
B. Steady proportion
C. More than one proportions
D. Reciprocal proportions - ANS-B
A 12 N internet force acts on an 8kg mass. What is the ensuing accleration?

A. 20kg x m/s2
B. 1.5kg x m/s2
C. 4kg x m/s2
D. 10kg x m/s2 - ANS-B

-using F=ma
-12N= (8kg)(a)
-a=12kg x m/s2 divided by way of 8kg= 1.5kg x m/s2
A 225kg individual on curler skates throws a 25kg item. The object travels at a velocity of 3m/s
to the proper. What is the approximate velocity of the man or woman because of throwing the
item?

A. Zero.3 m/s to the left
B. 2.5 m/s to the left
C. Three.0 m/s to the left
D. 27 m/s to the left - ANS-A

-find the momentum that is (25kg)(3m/s)= 75kg x m/s
-conservation of momentum is found by way of the mass of the man or woman 225kg times the
unknown velocity
-75kg x m/s x= 75/225= .03 m/s
A bottle is packed with air, tightly sealed, after which positioned in an ice bathtub. Which of the
subsequent will occur because the bottle is cooled?

A. Strain will growth and mass will lower
B. Stress will growth and mass will continue to be regular

,C. Pressure will decrease and mass will lower
D. Strain will decrease and mass will continue to be regular - ANS-D

-bottle is a closed system because it is tightly sealed
-be counted will neither enter nor depart, therefore the mass of the machine will continue to be
unchanged
a calorimeter is used to measure

A. Specific gravity
B. Mass
C. Heat capability
D. Temperature - ANS-C
A location at which an oceanic plate sinks into the mantle is known as a:

A. Subduction zone
B. Rift valley
C. Mid-ocean ridge
D. Hot spot - ANS-A
A molecule inside the cytoplasm moves to the plasma membrane and becomes attached to a
membrane protein. The membrane protein modifications its conformation and deposits the
attached molecule in the extracellular fluid. This process is an example of:

A. Endocytosis
B. Facilitated diffusion
C. Osmosis
D. Energetic delivery - ANS-D
A person provides a small quantity of sugar to a beaker of heat water and stirs. The contents of
the beaker are satisfactory described as:

A. An alloy
B. A mixture
C. A solution
D. A compound - ANS-C

-a homogenous aggregate of particles and the solute in which the debris are dissolved is called
a solution
A person drops an item having a mass of 23 kg from a window this is 15 m above the ground.
What is the approximate kinetic energy of the object whilst it moves the floor? (g=nine.Eight
m/s2)

A. 3381 J
B. 1690 J
C. 372 J
D. 35 J - ANS-A

, -use v2=2ax for an object initially at rest
-v2= 2(9.Eight)(15)= 294
-kinetic energy decided by using the use of k=1/2mv2
-okay=half(23)(294)= 3381 J
A character travels at 8km an hour inside the northward route for one hour, then travels at 6km
an hour within the eastward path for one hour, after which stops. What is the man or woman's
distance from the place to begin of the walk?

A. 2km
B. 10km
C. 14km
D. 24km - ANS-B
A fine comments loop that improved the rate of melting Arctic sea ice happens ordinarily
because of which of the following factors?

A. Ocean water is denser than sea ice
B. The motion of ice floes will increase wave movement
C. Melting sea ice reduced the salinity of the water
D. Water absorbs more sunlight than ice does - ANS-D

-water absorbs the energy of daylight whilst ice displays plenty of it
-loss of ice provides to any warming through reducing Earth's reflectivity and growing Earth's
ability to absorb the electricity of daylight
A feasible fantastic feedback loop that will increase the rate of world warming may want to arise
as carbon dioxide and methane are released from:

A. Melting glaciers
B. Thawing permafrost
C. Uncovered salt marshes
D. Eutrophying lakes - ANS-B

-big quantity of methane gas is trapped in permafrost
-thawing of the permafrost as a result of international warming ought to launch this methane
gas, that could make a contribution in addition to international warming
A red apple located below a green mild will appear:

A. Black because the green light is absorbed by the apple
B. Black due to the fact the apple displays the inexperienced mild
C. White due to the fact the green mild is absorbed by way of the apple
D. White due to the fact the apple displays the inexperienced mild - ANS-A

-a red apple seems pink as it displays simplest red light and absorbs other wavelengths which
includes green

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