Sargent
Which of the following best describes what happens when a solid turns into a liquid?
A. The particles stop moving completely.
B. The particles move faster and spread apart.
C. The particles become more tightly packed.
D. The particles turn into energy.
B. The particles move faster and spread apart
Which of the following best indicates that a chemical reaction has taken place?
A. A change in temperature and the formation of a new substance
B. A change in shape without a change in mass
C. Dissolving sugar in water
D. Breaking a piece of wood into smaller pieces
A. A change in temperature and the formation of a new substance
What do plants produce during photosynthesis that is essential for animals?
A. Carbon dioxide
B. Oxygen
C. Nitrogen
D. Glucose
B. Oxygen
Which human body system is primarily responsible for transporting nutrients and oxygen to cells?
A. Respiratory system
B. Digestive system
C. Circulatory system
D. Nervous system
C. Circulatory system
Which factor affects the pitch of a sound?
A. The frequency of the wave
B. The amplitude of the wave
C. The temperature of the air
D. The loudness of the sound
A. The frequency of the wave
Which structure is found in plant cells but not in animal cells?
A. Nucleus
B. Mitochondrion
C. Chloroplast
D. Cell membrane
C. Chloroplast
In humans, brown eyes (B) are dominant over blue eyes (b). Which pair of alleles would result in a person with blue eyes?
A. BB
B. Bb
C. bb
D. bB
C. bb
Which tool is used to measure air pressure?
A. Thermometer
B. Anemometer
C. Barometer
D. Rain gauge
C. Barometer
Why is it summer in the Northern Hemisphere when it is winter in the Southern Hemisphere?
A. The Earth is closer to the Sun during that time
B. The Sun moves closer to one hemisphere
C. The Earth's tilt causes different hemispheres to receive more direct sunlight
D. The Moon blocks sunlight from one hemisphere
C. The Earth's tilt causes different hemispheres to receive more direct sunlight
What is the primary source of energy for weather patterns on Earth?
A. The Sun
B. Earth’s core
C. Ocean currents
D. Earth’s magnetic field
A. The Sun
Which part of the water cycle is directly responsible for cloud formation?
A. Precipitation
B. Evaporation
C. Condensation
D. Infiltration
C. Condensation
Which position of the Moon results in a full moon as seen from Earth?
A. When the Moon is between the Earth and Sun
B. When the Earth is between the Moon and Sun
C. When the Moon is at a right angle to the Earth and Sun
D. When the Moon is directly above the North Pole
B. When the Earth is between the Moon and Sun
Which of the following is always true about atoms of the same element?
A. They have the same mass
B. They have the same number of protons
C. They have the same number of neutrons
D. They form the same compounds
B. They have the same number of protons
Which of the following is an example of potential energy being converted into kinetic energy?
A. A light bulb lighting up
B. A stretched rubber band being released
C. A fan turning on
D. A battery powering a remote control
B. A stretched rubber band being released
In a chemical reaction, the total mass of the products is equal to the total mass of the reactants. What does this demonstrate?
A. Law of Conservation of Mass
B. Newton’s Second Law
C. Theory of Plate Tectonics
D. Law of Inertia
A. Law of Conservation of Mass
Which simple machine is used in a seesaw?
A. Pulley
B. Lever
C. Wheel and axle
D. Inclined plane
B. Lever
A student pushes a box with a constant force. The box does not move. What is the most likely reason?
A. Gravity is pulling the box upward
B. The box is too light
C. Friction is equal to the student’s pushing force
D. The box is already moving at a constant speed
C. Friction is equal to the student’s pushing force
Which of the following is a renewable resource?
A. Coal
B. Oil
C. Natural gas
D. Solar energy
D. Solar Energy
Which type of rock is formed from cooled lava or magma?
A. Sedimentary
B. Metamorphic
C. Igneous
D. Fossil
C. Igneous
Which of the following is a primary consumer in a food chain?
A. Grasshopper
B. Hawk
C. Mushroom
D. Snake
A. Grasshopper
What causes most earthquakes to occur?
A. Heavy rainfall and flooding
B. Movement of ocean currents
C. Shifting of Earth’s tectonic plates
D. Rotation of the Earth on its axis
C. Shifting of Earth’s tectonic plates
Which material is best for making the handle of a cooking pot and why?
A. Metal, because it conducts heat well
B. Plastic, because it is flexible
C. Wood, because it resists heat and does not conduct it easily
D. Glass, because it is transparent
C. Wood, because it resists heat and does not conduct it easily
Which step comes first in the engineering design process?
A. Build a prototype
B. Communicate results
C. Identify the problem
D. Test the solution
C. Identify the problem
What is the function of a thermostat in a heating system?
A. To generate heat
B. To circulate air
C. To regulate temperature
D. To clean the air
C. To regulate temperature
Which natural hazard is most likely to occur near the edges of tectonic plates?
A. Earthquake
B. Tornado
C. Blizzard
D. Hurricane
A. Earthquake