Average Speed
A car travels 100 km in 2 hours. What is its average speed?
A. 25 km/h
B. 50 km/h
C. 75 km/h
D. 100 km/h
B. 50 km/h
A car travels 60 km north in 2 hours. What is its velocity?
A. 30 km/h south
B. 30 km/h north
C. 60 km/h north
D. 60 km/h east
B. 30 km/h north ✅
Newton’s First Law is also called the Law of:
A. Force
B. Motion
C. Inertia
D. Gravity
C. Inertia ✅
Thermal energy is the energy of:
A. Moving water
B. Moving air
C. Moving particles
D. Electrical currents
C. Moving particles ✅
Which of the following is an element?
A. Water (H₂O)
B. Carbon (C)
C. Salt (NaCl)
D. Carbon dioxide (CO₂)
B. Carbon (C) ✅
A runner completes 400 meters in 80 seconds. What is the average speed?
A. 2 m/s
B. 4 m/s
C. 5 m/s
D. 8 m/s
A. 2 m/s ✅
Two runners move at the same speed, but one goes east and the other west. Which statement is true?
A. They have the same speed and same velocity.
B. They have the same speed but different velocities.
C. They have different speeds and same velocity.
B. They have the same speed but different velocities. ✅
Newton’s First Law states that an object will stay at rest or in motion unless acted on by a:
A. Balanced force
B. Constant motion
C. Unbalanced force
D. Frictional force
C. Unbalanced force ✅
When heat moves from a hot pan to a metal spoon, energy is transferred by:
A. Radiation
B. Conduction
C. Convection
D. Insulation
B. Conduction ✅
A compound is made up of:
A. Only one type of atom
B. Two or more different elements chemically combined
C. A mixture of elements not bonded
D. Atoms that are not connected
B. Two or more different elements chemically combined ✅
A train moves 150 km in 3 hours. What is the average speed?
A. 45 km/h
B. 50 km/h
C. 55 km/h
D. 60 km/h
B. 50 km/h ✅
Velocity includes both speed and:
A. Time
B. Mass
C. Direction
D. Force
C. Direction ✅
A soccer ball will not move until a player kicks it. This shows:
A. Newton’s Second Law
B. Newton’s First Law
C. Newton’s Third Law
D. The Law of Gravity
B. Newton’s First Law ✅
Boiling water circulates heat as the hot water rises and cool water sinks. This is called:
A. Conduction
B. Convection
C. Radiation
D. Reflection
B. Convection ✅
Which of the following is a compound?
A. Oxygen (O₂)
B. Nitrogen (N₂)
C. Glucose (C₆H₁₂O₆)
D. Gold (Au)
C. Glucose (C₆H₁₂O₆) ✅
A cyclist covers 30 km in 1.5 hours. What is the average speed?
A. 10 km/h
B. 15 km/h
C. 20 km/h
D. 25 km/h
C. 20 km/h ✅
A train moves 100 km east in 2 hours. What is its velocity?
A. 25 km/h west
B. 40 km/h east
C. 50 km/h east
D. 75 km/h west
C. 50 km/h east ✅
When you’re in a car and it suddenly stops, your body moves forward because of:
A. Friction
B. Air resistance
C. Inertia
D. Gravity
C. Inertia ✅
The Sun warms your face on a cold day through:
A. Conduction
B. Convection
C. Radiation
D. Reflection
C. Radiation ✅
Elements are listed and organized by their properties on the:
A. Atomic Chart
B. Periodic Table
C. Molecular Chart
D. Compound Chart
B. Periodic Table ✅
A cheetah runs 600 meters in 30 seconds. What is the average speed?
A. 10 m/s
B. 15 m/s
C. 20 m/s
D. 25 m/s
C. 20 m/s ✅
A bird flies 20 m/s north, then turns and flies 20 m/s south. What happens to its velocity?
A. The velocity stays the same.
B. The velocity changes because direction changes. ✅
C. The velocity changes because speed increases.
D. The velocity stays constant.
B. The velocity changes because direction changes. ✅
An object moving at a constant speed in a straight line will continue that way unless:
A. A balanced force acts on it
B. An unbalanced force acts on it
C. The mass increases
D. It runs out of inertia
B. An unbalanced force acts on it ✅
A metal pot gets hot on the stove because heat moves through it. This is an example of:
A. Convection
B. Conduction
C. Radiation
D. Expansion
B. Conduction ✅
How many atoms are in the formula H₂O?
A. 1
B. 2
C. 3
D. 4
C. 3 ✅
A student walks 900 meters to school in 15 minutes. What is the average speed in meters per minute?
A. 30 m/min
B. 45 m/min
C. 60 m/min
D. 75 m/min
C. 60 m/min ✅
On a distance–time graph, a horizontal line means:
A. The object is speeding up.
B. The object is slowing down.
C. The object is not moving (at rest).
D. The object is moving backward.
C. The object is not moving (at rest). ✅
A book sitting on a table stays at rest because:
A. There is no force acting on it
B. The forces are balanced
C. It has no inertia
D. The table pushes harder
B. The forces are balanced ✅
Which statement about heat transfer is true?
A. Heat moves from cold to hot
B. Heat moves from hot to cold
C. Heat stays where it is
D. Heat doesn’t move at all
B. Heat moves from hot to cold ✅
How many oxygen atoms are in Ca(NO₃)₂?
A. 1
B. 2
C. 3
D. 6
D. 6 ✅
A plane flies 800 km in 2 hours. What is its average speed?
A. 200 km/h
B. 300 km/h
C. 400 km/h
D. 500 km/h
C. 400 km/h ✅
A steeper line on a distance–time graph shows:
A. A slower speed
B. A faster speed
C. No motion
D. Constant rest
B. A faster speed ✅
Which of these best describes inertia?
A. The force that pushes an object
B. The resistance to a change in motion
C. The pull of gravity
D. The speed of a moving object
B. The resistance to a change in motion ✅
In a thermal energy system, what is the main goal?
A. To keep all objects at the same temperature
B. To move heat until thermal equilibrium is reached
C. To block energy transfer
D. To reduce motion of particles
B. To move heat until thermal equilibrium is reached ✅
A piece of paper is torn in half. This is a:
A. Chemical change
B. Physical change
C. Combustion reaction
D. New substance formed
B. Physical change ✅
A dog runs 120 meters in 20 seconds. What is the average speed?
A. 4 m/s
B. 5 m/s
C. 6 m/s
D. 8 m/s
B. 5 m/s ✅
If a line on a distance–time graph slopes downward, it shows:
A. The object is moving away.
B. The object is stopped.
C. The object is returning to start.
D. The object is speeding up.
C. The object is returning to start. ✅
If you slide a hockey puck on ice, it keeps moving for a while because:
A. No forces act on it
B. Inertia keeps it moving
C. Gravity speeds it up
D. The ice pushes it forward
B. Inertia keeps it moving ✅
A campfire heats your hands without touching the fire. This is an example of:
A. Convection
B. Radiation
C. Conduction
D. Friction
B. Radiation ✅
When vinegar reacts with baking soda to form bubbles, it shows a:
A. Physical change
B. Chemical change
C. Mixture
D. Dissolving process
B. Chemical change ✅
A car travels 240 km in 4 hours. What is the average speed?
A. 50 km/h
B. 55 km/h
C. 60 km/h
D. 65 km/h
C. 60 km/h ✅
When two lines on a distance–time graph are straight but one is steeper, what does that mean?
A. The steeper line represents slower motion.
B. The steeper line represents faster motion.
C. Both lines represent the same speed.
D. The steeper line represents stopping.
B. The steeper line represents faster motion. ✅
When a skateboarder suddenly stops, but the skateboard keeps rolling forward, this shows:
A. The skateboard’s inertia
B. The skateboard’s gravity
C. A balanced force
D. No motion
A. The skateboard’s inertia ✅
Which material is the best conductor of heat?
A. Wood
B. Plastic
C. Metal
D. Rubber
C. Metal ✅
An aqueous solution is best described as:
A. A solid mixture
B. A liquid that contains water
C. A gas that dissolves in oil
D. A solid compound
B. A liquid that contains water ✅
A skateboarder rolls 90 meters in 30 seconds. What is the average speed?
A. 2 m/s
B. 3 m/s
C. 4 m/s
D. 5 m/s
B. 3 m/s ✅
On a distance–time graph, what does a curved line represent?
A. Constant speed
B. Changing speed (acceleration)
C. Rest
D. No distance traveled
B. Changing speed (acceleration) ✅
Which situation shows an unbalanced force acting on an object at rest?
A. A book sitting on a desk
B. A ball staying still on the ground
C. A soccer ball being kicked
D. A parked car
C. A soccer ball being kicked ✅
A thick winter jacket keeps you warm because it:
A. Produces its own heat
B. Conducts heat easily
C. Prevents heat transfer from your body to the air
D. Absorbs sunlight
C. Prevents heat transfer from your body to the air ✅
In a saltwater solution, salt is the ___ and water is the ___.
A. Solvent; solute
B. Solute; solvent
C. Mixture; element
D. Compound; mixture
B. Solute; solvent ✅