MEASUREMENTS & SCIENCE
You want to know which of two toy cars is faster. What information do you need?
Distance traveled and time
Two students race 50 m. Ana finishes in 10 s and Alex in 12 s. Who had the greater average speed?
A) Ana
You kick a soccer ball that is resting on the ground. What causes the ball to start moving?
A) Its color
B) A force from your foot
C) Its temperature
D) Gravity disappears
B) A force from your foot
Which object has the MOST kinetic energy?
A) A parked bicycle
B) A rolling bicycle
C) A bicycle hanging on a wall
D) A bicycle with no rider
B) A rolling bicycle
Why does a ball thrown upward eventually come back down?
Gravity
Which measurement makes the most sense for the height of a classroom door?
A) 2 mm
B) 2 cm
C) 2 m
D) 20 m
2 m
You are sitting inside a moving bus. Compared with your seat, are you moving?
A) Yes
B) No
C) Only when the bus accelerates
D) Only when the bus stops
B) No
Two students push a box from opposite sides with the same force. What will most likely happen if the box starts at rest?
A) Move left
B) Move right
C) Remain at rest
D) Move upward
C) Remain at rest
You leave an ice cube on a table. What will eventually happen?
A) It gets colder forever
B) It absorbs thermal energy and melts
C) It loses all its mass instantly
D) Gravity stops acting on it
B) It absorbs thermal energy and melts
Why are seatbelts important when a car suddenly stops?
A) Your body tends to continue moving forward
B) Your body loses mass
C) Gravity becomes stronger
D) The car pushes you upward
A) Your body tends to continue moving forward
You need exactly 25 mL of water for an experiment. Which instrument should you use?
A) Ruler
B) Graduated cylinder
C) Balance
D) Stopwatch
B) Graduated cylinder
The same student sitting on the bus is compared with a tree outside. Is the student moving now?
A) Yes
B) No
C) Only if the student stands up
D) There is no correct answer
A) Yes
You push an empty shopping cart and a full shopping cart with the same force. Which one is easier to accelerate?
Empty cart
Which ball has more gravitational potential energy?
A) A ball on the floor
B) The same ball on a desk
C) They have the same
D) Neither has energy
B) The same ball on a desk
Why is it harder to walk on ice than on a rough sidewalk?
A) Ice has less gravity
B) There is less friction between your shoes and the ice
C) Your mass decreases
D) Ice pushes you upward
B) There is less friction between your shoes and the ice
Three students measure the same pencil and obtain 14.9 cm, 15.0 cm, and 15.1 cm. A fourth student gets 19.8 cm. Which result should be checked?
A) 14.9 cm
B) 15.0 cm
C) 15.1 cm
D) 19.8 cm
D) 19.8 cm
A car travels 60 km in 1 hour and another car travels 90 km in 1.5 hours. Which is faster?
A) First car
B) Second car
C) Same average speed
D) Impossible to know
C) Same average speed
A book is sitting still on a table. Gravity is pulling it downward. Why doesn't it fall?
A) Gravity stops working
B) The table exerts an upward force
C) The book has no weight
D) Air holds it up
B) The table exerts an upward force
A metal spoon and a wooden spoon have been in the same room for hours. You touch both. Why does the metal feel colder?
A) Metal is always hotter than wood
B) Metal transfers thermal energy from your hand faster
C) Wood creates heat
D) The metal has no thermal energy
B) Metal transfers thermal energy from your hand faster
You are standing on a skateboard and throw a heavy backpack forward. What will happen to you?
A) You move forward
B) You move backward
C) You stay perfectly still
D) You move upward
You move backward
A bottle contains 1.5 L of water. How many 250 mL cups can be completely filled?
6
You walk 20 m north and then 20 m south, returning to your starting point. Which statement is correct?
A) Distance = 0 m
B) Distance = 40 m and displacement = 0 m
C) Distance = 20 m and displacement = 20 m
D) Distance = 0 m and displacement = 40 m
B) Distance = 40 m and displacement = 0 m
An astronaut takes a 5 kg object from Earth to the Moon. What happens to its mass?
A) It becomes greater than 5 kg
B) It becomes less than 5 kg
C) It remains 5 kg
D) It becomes 0 kg
C) It remains 5 kg
A roller coaster is released from the top of a hill. As it moves downward, what mainly happens?
A) Kinetic energy → potential energy
B) Potential energy → kinetic energy
C) All energy disappears
D) Its mass becomes energy
B) Potential energy → kinetic energy
A hammer and a feather are dropped at the same time on the Moon, where there is essentially no atmosphere. Which one reaches the ground first?
A) Hammer
B) Feather
C) They reach the ground at the same time
D) Neither falls
C) They reach the ground at the same time