Properties & Mixtures
If an object sinks in water, its relative density is:
A) Less dense than water
B) The same density as water
C) More dense than water
D) Lacking density entirely
C) More dense than water
For electrical energy to flow and light a bulb, the circuit must be:
A) Open
B) Broken
C) Complete or Closed
D) Disconnected from the battery
C) Complete or Closed
One full rotation of the Earth on its axis takes approximately:
A) 12 hours
B) 24 hours
C) 365 days
D) 1 month
B) 24 hours
A Nile crocodile living along the Nile River is an interaction with:
A) A biotic factor only
B) An abiotic factor
C) A predatory factor
D) A man-made factor
B) An abiotic factor
Why do shadows change position and shape throughout the day?
A) The Sun is moving around the Earth
B) The Earth is rotating on its axis
C) The Earth’s orbit is changing speed
D) Clouds block the light at different angles
B) The Earth is rotating on its axis
Why is copper wire a preferred material for building electric circuits?
A) It is a strong insulator
B) It has high electrical conductivity
C) It is magnetic
D) It dissolves easily in water
B) It has high electrical conductivity
A student uses a mirror to bounce light onto a wall. This is an example of:
A) Refraction
B) Absorption
C) Reflection
D) Transmission
C) Reflection
The Sun appears to move across the sky because:
A) The Sun revolves around the Earth
B) The Earth rotates on its axis
C) The Earth orbits the Sun
D) The Sun rotates on its own axis
B) The Earth rotates on its axis
How do the large ears of a Fennec Fox help it survive in a desert environment?
A) They help the fox store water
B) They allow the fox to release body heat to stay cool
C) They are used to camouflage with the sand
D) They help the fox dig burrows more quickly
B) They allow the fox to release body heat to stay cool
Which of the following describes climate rather than weather?
A) It is raining today in McAllen, Texas
B) The wind speed is 15 mph this afternoon
C) The average yearly rainfall in a region over 30 years
D) A thunderstorm is expected this evening
C) The average yearly rainfall in a region over 30 years
Which property of sugar remains unchanged after it has been dissolved in water?
A) Physical state
B) Texture
C) Mass
D) Visibility
C) Mass
Why does a straw appear ”broken” when placed in a glass of water?
A) Light is reflected off the straw
B) Light is refracted as it moves through different mediums
C) The water absorbs the light hitting the straw
D) The straw is actually changing shape in the water
B) Light is refracted as it moves through different mediums
Which process is primarily responsible for the formation of a V-shaped canyon?
A) Wind blowing sand into dunes
B) Glaciers melting into lakes
C) Fast-moving water eroding rock over a long time
D) Volcanic eruptions depositing lava
C) Fast-moving water eroding rock over a long time
When bumblebees interact with one another to build a hive, they are interacting with:
A) Abiotic parts of the environment
B) Biotic parts of the environment
C) Inorganic materials
D) Climate patterns
B) Biotic parts of the environment
To improve an investigation testing magnet strength, students should:
A) Use different objects for every magnet
B) Place each magnet at the same distance from the clips
C) Change the type of paper clip for every trial
D) Put the magnets in water during the test
B) Place each magnet at the same distance from the clips
Which set of tools is best for separating a mixture of gravel, iron filings, and water?
A) A magnet and a hot plate
B) A screen/filter and a magnet
C) A triple beam balance and a beaker
D) A thermometer and a filter
B) A screen/filter and a magnet
In which type of circuit can one bulb stay lit even if another bulb is removed?
A) Series circuit
B) Parallel circuit
C) Open circuit
D) Short circuit
B) Parallel circuit
A delta forms at the mouth of a river because:
A) The water speeds up and carries more rocks
B) The water slows down and deposits sediment
C) Wind blows sand into the river
D) Tectonic plates push the land upward
B) The water slows down and deposits sediment
Which structure is an adaptation for a badger to dig burrows for shelter?
A) Thick fur
B) Sharp claws
C) Small eyes
D) Flat teeth
B) Sharp claws
Which material would be the best insulator for a hot drink?
A) Metal
B) Copper
C) Wood or Plastic
D) Aluminum foil
C) Wood or Plastic
What is the defining characteristic of a solution compared to a simple mixture?
A) One substance dissolves and spreads evenly in another
B) The ingredients can only be separated by a magnet
C) The substances always change their mass
D) A chemical reaction creates a new substance
A) One substance dissolves and spreads evenly in another
Which statement correctly explains how we see a non-luminous object?
A) Light travels from our eyes to the object
B) The object produces its own light rays
C) Light reflects off the object and travels to our eyes
D) Light refracts through the object into our eyes
C) Light reflects off the object and travels to our eyes
In the formation of sedimentary rock, what is the process of ”compaction”?
A) Rocks breaking into smaller pieces
B) Sediments being glued together by minerals
C) Layers of sediment being squeezed together by weight
D) Sediments being carried away by wind
C) Layers of sediment being squeezed together by weight
A stingray has a kite-shaped, flattened body. This adaptation is best suited for:
A) Swimming swiftly in open water
B) Gliding along the ocean bottom and settling in sand
C) Jumping out of the water to catch birds
D) Climbing onto rocky coasts
B) Gliding along the ocean bottom and settling in sand
What is the primary role of the Sun in the Earth’s water cycle?
A) It creates gravity to pull rain down
B) It provides the energy for evaporation to occur
C) It reflects light off the clouds
D) It cools the atmosphere for condensation
B) It provides the energy for evaporation to occur
When salt dissolves in water, it is considered a:
A) Chemical change because the salt is gone
B) Physical change because the salt keeps its properties
C) Chemical change because the water tastes different
D) Physical change because the water turns into a solid
B) Physical change because the salt keeps its properties
In an investigation testing how the force of a throw affects a splash, which of the following is a controlled variable?
A) The height of the splash
B) The force the ball is thrown with
C) The height the ball is thrown from
D) The size of the splash
C) The height the ball is thrown from
Which stage of the water cycle is driven directly by heat from the Sun?
A) Precipitation
B) Condensation
C) Evaporation
D) Runof
C) Evaporation
What is a major survival advantage that apple trees have over mosses?
A) They grow on bare rocks
B) They have a shorter life span
C) Their seeds can be spread far away by animals
D) They don’t need water to reproduce
C) Their seeds can be spread far away by animals
Which landform is created by a glacier moving slowly over the land?
A) A sand dune
B) A V-shaped canyon
C) A U-shaped valley
D) A delta
C) A U-shaped valley
A student adds 12g of salt to 100ml of water. Which evidence proves the salt is still there?
A) The water becomes more transparent
B) The total mass of the mixture is the sum of the salt and water
C) The volume of the water decreases
D) The water begins to boil at a lower temperature
B) The total mass of the mixture is the sum of the salt and water
Electrical energy in a functioning circuit can be transformed into:
A) Only light energy
B) Light, sound, motion, and thermal energy
C) Solar and wind energy
D) Chemical and nuclear energy
B) Light, sound, motion, and thermal energy
What is a key requirement for the formation of fossil fuels that is not required for basic sedimentary rock?
A) Time
B) High heat and organic matter
C) Water
D) Wind
B) High heat and organic matter
The Egyptian plover bird picking meat from a crocodile’s teeth is an example of:
A) A biotic interaction where both organisms benefit
B) An abiotic interaction with the river
C) A competitive interaction for the same food
D) A random interaction with no survival purpose
A) A biotic interaction where both organisms benefit
When sugar dissolves in lemon juice and water to make lemonade, the mass of the mixture is:
A) Less than the mass of the ingredients
B) The same as the total mass of all ingredients
C) More than the mass of the ingredients
D) Lost during the stirring process
B) The same as the total mass of all ingredients