🔬 NATURE OF SCIENCE
Sofia wants to know if plants grow better under natural sunlight or artificial light. What must she keep the same?
A) Type of plant
B) Color of the pot
C) Type of music in the room
D) Brand of ruler
A) Type of plant
What causes evaporation in the water cycle?
A) Clouds
B) Wind
C) The Sun
D) Gravity
C) The Sun
If you push two balls with the same force, which one will move farther?
A) Both the same
B) The lighter ball
C) Neither
D) The heavier ball
B) The lighter ball
Which adaptation helps a polar bear survive?
A) Wings
B) Scales
C) White fur
D) Gills
C) White fur
🔬 Nature of Science (More Challenging)
21.
A student tests whether the amount of water affects plant growth. She gives Plant A 50 mL of water, Plant B 100 mL, and Plant C 150 mL. However, Plant C is placed near a window while the others are not.
Why might her results be unreliable?
A) She did not measure the plant height.
B) She changed more than one variable.
C) She used different types of plants.
D) She did not record observations.
Answer: B
👉 She changed water AND light. Only one independent variable should change.
A group measures a plant’s height by saying “about 10 cm.” What should they do to improve their data?
A) Draw a picture
B) Use a ruler to measure exactly
C) Ask another group
D) Change the hypothesis
B) Use a ruler to measure exactly
Which planet has the longest year?
A) Neptune
B) Mercury
C) Venus
D) Mars
A) Neptune
Why does an object not move when forces are balanced?
A) The wind is blowing
B) It is too heavy
C) The forces are equal
D) There is no gravity
C) The forces are equal
Which organ helps clean the blood by removing toxins and also produces bile to help digest fats?
A) Kidneys
B) Bladder
C) Liver
D) Lungs
C) Liver
🌎 Earth & Space Science (More Challenging)
Two cities are located at the same latitude. One is near the ocean and the other is far inland. Why might their climates be different?
A) The inland city receives more sunlight.
B) The ocean absorbs and releases heat slowly, affecting temperature.
C) The inland city has more gravity.
D) The ocean blocks precipitation completely.
Answer: B
👉 Large bodies of water regulate temperature.
In a fertilizer experiment, which group is the control group?
A) Plants with fertilizer
B) Plants without fertilizer
C) Tallest plants
D) Greenest plants
B) Plants without fertilizer
Which tool measures air pressure?
A) Rain gauge
B) Anemometer
C) Thermometer
D) Barometer
D) Barometer
What force causes a rolling ball to slow down?
A) Friction
B) Electricity
C) Light
D) Magnetism
A) Friction
What is an example of an invasive species?
A) A fish from the same lake
B) A tree that has always lived there
C) A plant introduced that harms the ecosystem
D) An animal native to the area
C) A plant introduced that harms the ecosystem
⚙️ Physical Science (More Challenging)
23.
Two identical toy cars are pushed with the same force. One rolls across carpet and the other across tile. The car on tile travels farther. Why?
A) Gravity is weaker on tile.
B) The tile increases mass.
C) Carpet creates more friction than tile.
D) The tile creates more balanced forces.
Answer: C
👉 More friction = less motion.
Why is it important to repeat an experiment?
A) To finish faster
B) To confirm results and reduce errors
C) To change the hypothesis
D) To impress the teacher
B) To confirm results and reduce errors
What happens when warm air rises up the side of a mountain?
A) It disappears
B) It cools and forms clouds
C) It turns into wind
D) It gets warmer
B) It cools and forms clouds
If you kick a ball with more force, what happens?
A) It becomes heavier
B) It loses mass
C) It moves faster
D) It changes color
C) It moves faster
What do all plants need to make their own food?
A) Only soil
B) Only air
C) Sunlight
D) Only water
C) Sunlight
🌱 Life Science (More Challenging)
A patient has difficulty digesting fats properly. Which organ is most likely not functioning correctly?
A) Kidneys
B) Liver
C) Heart
D) Lungs
Answer: B
👉 The liver produces bile to help digest fats.
Which statement is an observation?
A) “I think the plant is happy.”
B) “The plant is 12 cm tall.”
C) “The plant will grow tomorrow.”
D) “Plants love sunlight.
B) “The plant is 12 cm tall.”
What is the main role of the Sun in our Solar System?
A) To provide light and energy
B) To spin the Moon
C) To make rain
D) To create gravity
A) To provide light and energy
If mass increases but the force stays the same, what happens?
A) It moves less
B) Nothing changes
C) It stops completely
D) It moves more
A) It moves less
Which is an example of a plant responding to its environment?
A) Flying
B) Growing toward light
C) Migrating
D) Hibernating
B) Growing toward light
⭐ Extra (Higher-Level — Earth & Space)
A mountain region receives heavy rainfall on one side but very little on the other side. What best explains this difference?
A) Air rises, cools, and condenses on one side, losing moisture before descending dry on the other side.
B) Gravity pulls rain only to one side.
C) The Sun shines more on one side of the mountain.
D) The wind stops at the mountain peak.
Answer: A
👉 This describes the rain shadow effect.