Science Diagnostic Assessment

Grade 11 | 10 Questions | 30 Minutes

Instructions

* Student information must be exactly the same. Please check for correct spelling, spacing, and capitalization. Otherwise, accurate diagnosis and evaluation will not be possible.

* After 15 minutes, the session will automatically close and your results will be submitted.

Student Information

Name (English Only) * Email *

Science Diagnostic Test - Grade 11 ⏰ Time Remaining: 30:00

1 2 3 4 5 6 7 8 9 10

Question 1 / 10

Enzyme Activity ⭐ Easy • 2 points

The graph below shows enzyme activity at different pH levels. What do you observe about the enzyme's optimal pH?

A The enzyme shows highest activity at pH 8 B The enzyme is equally active at all pH levels C The enzyme activity increases linearly with pH D The enzyme is denatured at extreme pH values

Question 2 / 10

Chemical Bonds ⭐ Easy • 2 points

Classify the following molecular structures based on their primary bond type:

Molecule 1: NaCl

Na⁺ + Cl^-

Molecule 2: H₂O

H-O-H (104.5° angle)

Molecule 3: Cu

Metal lattice structure

Molecule 4: CH₄

Tetrahedral structure

A 1: Ionic, 2: Covalent, 3: Metallic, 4: Covalent B 1: Covalent, 2: Ionic, 3: Metallic, 4: Ionic C 1: Metallic, 2: Covalent, 3: Ionic, 4: Metallic D 1: Ionic, 2: Ionic, 3: Covalent, 4: Metallic

Question 3 / 10

Wave Properties ⭐ Easy • 2 points

A wave has a frequency of 5 × 10¹⁴ Hz. If the speed of light is 3 × 10⁸ m/s, what is the wavelength?

A 6 × 10^-7 m (600 nm) B 1.67 × 10^-7 m (167 nm) C 1.5 × 10²³ m D 6 × 10^-4 m (0.6 mm)

Question 4 / 10

Genetics ⭐⭐ Medium • 3 points

A Punnett square shows a cross between two heterozygous parents (Bb × Bb) for brown eyes (B = dominant, b = recessive). What can you infer about the offspring?

	B	b
B	BB	Bb
b	Bb	bb

A All offspring will have brown eyes B 75% will have brown eyes, 25% blue eyes C 50% will have brown eyes, 50% blue eyes D All offspring will have blue eyes

Question 5 / 10

Climate Change ⭐⭐ Medium • 3 points

Based on the CO₂ concentration trend from 1960-2020, predict the likely atmospheric CO₂ level by 2050 if current trends continue.

Year	1960	1980	2000	2020
CO₂ (ppm)	315	340	370	415
Rate of Change	-	+1.25 ppm/year	+1.5 ppm/year	+2.25 ppm/year

A Approximately 430 ppm (linear decrease) B Approximately 480-500 ppm (accelerating increase) C Exactly 415 ppm (stabilization) D Below 300 ppm (reversal)

Question 6 / 10

Population Dynamics ⭐⭐ Medium • 3 points

Analyze the predator-prey population data. What pattern best describes their relationship?

A Independent fluctuations with no correlation B Cyclical oscillations with predator peaks following prey peaks C Simultaneous increases and decreases D Inverse relationship at all times

Question 7 / 10

Ocean Acidification ⭐⭐ Medium • 3 points

What is the primary cause-and-effect relationship between increased atmospheric CO₂ and coral reef bleaching?

CO₂ + H₂O ⇌ H₂CO₃ ⇌ H⁺ + HCO₃^-

pH Ocean: 8.2 (1850) → 8.1 (2000) → 8.0 (2020)

A CO₂ directly poisons coral polyps B CO₂ dissolves in seawater, forming carbonic acid, lowering pH, and disrupting coral calcification C CO₂ blocks sunlight needed for coral photosynthesis D CO₂ increases water temperature only

Question 8 / 10

Experimental Design ⭐⭐⭐ Hard • 4 points

Design an experiment to test whether music affects plant growth. Which experimental setup would provide the most reliable results?

Available Resources:

30 identical bean plants (same age, height)
3 soundproof growth chambers
Controlled light, water, and temperature systems
Various music types (classical, rock, nature sounds)
Decibel meter
30-day experimental period

A 1 chamber with all music types played sequentially, all 30 plants together B 3 chambers: 10 plants each with classical music, rock music, and silence (control), all at 70 dB, measuring height weekly C 2 chambers: 15 plants with mixed music, 15 plants in varying light conditions D 3 chambers with different temperatures, all playing the same music

Question 9 / 10

Atomic Models ⭐⭐⭐ Hard • 4 points

Evaluate the quantum mechanical model of the atom. Which experimental evidence best supports this model over the Bohr model?

A Hydrogen's single spectral line proves fixed orbits B The splitting of spectral lines in magnetic fields demonstrates electron spin and orbital shapes C Cathode ray experiments show electrons are particles only D Gold foil experiment proves electrons orbit in circles

Question 10 / 10

Energy Conservation ⭐⭐⭐ Hard • 4 points

A roller coaster car (m = 500 kg) starts from rest at height h₁ = 50 m. At the bottom (h₂ = 0 m), it has velocity v = 28 m/s instead of the calculated 31.3 m/s. Using scientific reasoning, what accounts for this discrepancy?

A Measurement error in the velocity B Energy was destroyed, violating conservation C 20% of mechanical energy was converted to thermal energy due to friction and air resistance D The car gained mass during descent

진단 평가 결과

0 /30점

레벨 판정중...

🌟 강점 영역

📚 보완 필요 영역

💡 개인 맞춤 피드백

분석 중입니다...

📊 상세 결과

프로그램 추천

이 수준에 맞는 학습지를 매주 받아보세요

CCSS 기반 맞춤 워크시트 매주 배달
수학 · 과학 · 영어 3과목 (영어 출제)
월 ₩29,000 — 첫 주 무료 체험

주간 학습지 알아보기 → 블로그에서 더 알아보기