Solar System
Which object is located at the center of our solar system?
A) Earth
B) The Moon
C) The Sun
D) Jupiter
C) The Sun
What causes clouds to form in the atmosphere?
A) Water freezing
B) Evaporation of oceans
C) Condensation of water vapor on dust particles
D) Precipitation collecting in lakes
C) Condensation of water vapor on dust particles
Which organism gets its energy directly from the Sun?
A) Snake
B) Grass
C) Mouse
D) Hawk
B) Grass
What does it mean when a solid melts?
A) It changes from a liquid to a gas
B) It changes from a gas to a solid
C) It changes from a solid to a liquid
D) It disappears
C) It changes from a solid to a liquid
What is a force?
A) A type of machine
B) A push or pull
C) A speed change
D) A magnet
B) A push or pull
What type of surface do the inner planets have?
A) Icy
B) Gaseous
C) Rocky
D) Liquid
C) Rocky
Which form of precipitation forms when raindrops freeze before reaching the ground?
A) Hail
B) Snow
C) Rain
D) Sleet
D) Sleet
In a food web, which organism is most affected if the producer population decreases drastically?
A) Decomposer
B) Primary consumer
C) Secondary consumer
D) Scavenger
B) Primary consumer
Which tool would you use to measure the volume of a liquid?
A) Thermometer
B) Scale
C) Graduated cylinder
D) Ruler
C) Graduated cylinder
Which example shows gravity at work?
A) A paperclip sticking to a magnet
B) A soccer ball falling to the ground
C) A car starting when the key is turned
D) A balloon floating
B) A soccer ball falling to the ground
Which object in the solar system is a frozen mixture of gas and dust and forms a tail near the Sun?
A) Asteroid
B) Comet
C) Moon
D) Dwarf planet
B) Comet
What kind of climate would a location at high elevation near a large body of water likely have?
A) Cold and dry
B) Mild and wet
C) Hot and humid
D) Hot and dry
B) Mild and wet
Why are decomposers important to ecosystems?
A) They eat other animals
B) They recycle nutrients back into the soil
C) They store sunlight
D) They prevent erosion
B) They recycle nutrients back into the soil
Which of the following is not a property used to classify matter?
A) Shape
B) Texture
C) Taste
D) Magnetic attraction
C) Taste
Which object will need the most force to move?
A) A toy car
B) A backpack
C) A bowling ball
D) A book
C) A bowling ball
Why do outer planets have more moons than inner planets?
A) They are closer to the Sun
B) They have stronger gravitational pulls
C) They move faster
D) They are smaller
B) They have stronger gravitational pulls
Which factor is least likely to affect the temperature of a region’s climate?
A) Latitude
B) Elevation
C) Time of day
D) Distance from water
C) Time of day
A food web is disrupted when a predator is removed. What is the most likely effect?
A) The prey population will decrease
B) The prey population will increase
C) The producers will go extinct
D) Decomposers will become predators
B) The prey population will increase
Why does sugar dissolve faster in hot water than cold water?
A) Hot water has less energy
B) Cold water has more volume
C) Hot water molecules move faster
D) Cold water changes sugar into a gas
C) Hot water molecules move faster
What happens when two forces act in opposite directions but one is stronger?
A) The object doesn’t move
B) The forces cancel out
C) The object moves in the direction of the stronger force
D) The object explodes
C) The object moves in the direction of the stronger force
What best explains why planets orbit the Sun in curved paths?
A) The moon's gravity
B) The Sun’s gravitational force
C) Earth’s magnetic field
D) The planet's rotation
B) The Sun’s gravitational force
A weather forecast includes high humidity, low barometric pressure, and fast wind speeds. What is most likely?
A) A dry sunny day
B) A cold front is leaving
C) A storm is approaching
D) The temperature will fall below freezing
C) A storm is approaching
What would happen to an ecosystem if decomposers disappeared?
A) Consumers would stop eating
B) Energy flow would increase
C) Dead plants and animals would pile up
D) Plants would produce more energy
C) Dead plants and animals would pile up
What happens to particles of a solid when it becomes a gas without becoming a liquid first?
A) They disappear
B) They stop moving
C) They skip a state and spread out
D) They turn into a liquid later
C) They skip a state and spread out
Which situation best shows Newton’s First Law of Motion?
A) A rocket blasting off
B) A car slowing down due to brakes
C) A ball rolling until friction stops it
D) A sponge soaking up water
C) A ball rolling until friction stops it