EARTH SCIENCE
What layer of Earth do we live on?
A. Mantle
B. Core
C. Crust
D. Inner Core
C. Crust
What structure controls the activities of a cell?
A. Cell membrane
B. Cytoplasm
C. Nucleus
D. Vacuole
C. Nucleus
Which state of matter has a definite shape and volume?
A. Liquid
B. Gas
C. Solid
D. Plasma
C. Solid
What force pulls objects toward Earth?
A. Magnetism
B. Friction
C. Gravity
D. Electricity
C. Gravity
What tool is MOST useful for measuring temperature?
A. Ruler
B. Balance
C. Thermometer
D. Stopwatch
C. Thermometer
A recipe needs 3 cups of flour for 1 batch of cookies. How many cups of flour are needed for 4 batches?
A. 7 cups
B. 9 cups
C. 12 cups
D. 15 cups
C. 12 cups
What causes day and night?
A. Earth revolving around the Sun
B. Earth rotating on its axis
C. The Moon moving
D. Clouds blocking sunlight
B. Earth rotating on its axis
Which organism makes its own food?
A. Mushroom
B. Hawk
C. Grass
D. Human
C. Grass
What form of energy comes from moving objects?
A. Thermal
B. Kinetic
C. Chemical
D. Sound
B. Kinetic
What force slows objects rubbing together?
A. Gravity
B. Friction
C. Magnetism
D. Inertia
B. Friction
In an experiment, what is the variable that changes on purpose called?
A. Constant
B. Independent variable
C. Control group
D. Conclusion
B. Independent variable
A student scored 82, 90, and 88 on three quizzes. What is the average score?
A. 85
B. 86
C. 87
D. 88
B. 86
A student notices dark clouds, falling pressure, and strong winds. What weather is MOST likely coming?
A. Snowstorm
B. Thunderstorm
C. Sunny skies
D. Drought
B. Thunderstorm
Why are decomposers important in ecosystems?
A. They create sunlight
B. They recycle nutrients
C. They stop plant growth
D. They remove oxygen
B. They recycle nutrients
Ice melts faster on a warm sidewalk than on cold grass. Why?
A. Sidewalks absorb more heat energy
B. Grass produces cold energy
C. Ice melts only on cement
D. Sunlight avoids grass
A. Sidewalks absorb more heat energy
Why does a soccer ball eventually stop rolling?
A. Gravity disappears
B. Friction slows it down
C. Air pushes it forward
D. Motion increases forever
B. Friction slows it down
A student tests which paper towel absorbs the most water. What should stay the same?
A. Brand names
B. Amount of water used
C. Student opinions
D. Color of towels
B. Amount of water used
A rectangle has a length of 12 cm and a width of 5 cm. What is its area?
A. 17 cm²
B. 34 cm²
C. 60 cm
D. 60 cm²
D. 60 cm²
Which statement best explains how fossils form?
A. Organisms melt into rocks
B. Organisms are preserved in sediment over time
C. Rocks turn into bones
D. Animals dig into Earth’s mantle
B. Organisms are preserved in sediment over time
A rabbit population decreases suddenly. Which organism would MOST likely be affected next?
A. Grass
B. Foxes
C. Trees
D. Worms
B. Foxes
Which change is a chemical change?
A. Tearing paper
B. Melting butter
C. Rust forming on metal
D. Breaking glass
C. Rust forming on metal
Which object would require the MOST force to move?
A. Empty backpack
B. Tennis ball
C. Small toy car
D. Full bookshelf
D. Full bookshelf
Why do scientists repeat experiments?
A. To waste time
B. To increase reliability of results
C. To change the answer
D. To make experiments longer
B. To increase reliability of results
A store advertises a backpack for $40 with a 25% discount. What is the sale price?
A. $10
B. $25
C. $30
D. $35
C. $30
25% of $40 is $10, so subtract $10 from $40.
A town near a river experiences flooding after many trees are removed nearby. Why might this happen?
A. Trees create floods
B. Without roots, soil absorbs less water
C. Rivers stop moving
D. More sunlight heats the river
B. Without roots, soil absorbs less water
A plant placed in a dark room becomes weak and yellow. Which explanation BEST explains why?
A. Plants need darkness to grow
B. Plants require sunlight for photosynthesis
C. Plants only need water
D. Soil changes color in darkness
B. Plants require sunlight for photosynthesis
A student puts identical cups of hot water in metal and foam containers. The metal cup cools faster. Why?
A. Foam creates heat
B. Metal is a better conductor of heat
C. Water changes state faster in metal
D. Foam absorbs all energy
B. Metal is a better conductor of heat
A car and bicycle travel at the same speed. The car is harder to stop. Why?
A. Cars have more mass and momentum
B. Bikes move faster
C. Cars have less friction
D. Bicycles have stronger brakes
A. Cars have more mass and momentum
A scientist’s hypothesis is not supported by the data. What should the scientist do next?
A. Change the data
B. Ignore the results
C. Revise the hypothesis and test again
D. End the experiment forever
C. Revise the hypothesis and test again
A tank contains 120 liters of water. It leaks 8 liters every hour. Which equation shows how much water remains after h hours?
A. 120+8h120 + 8h120+8h
B. 120−8h120 - 8h120−8h
C. 8−120h8 - 120h8−120h
D. 120h−8120h - 8120h−8
B. 120−8h
This equation represents the starting amount minus the amount leaking each hour.
y=120−8h