Practice Car in Science

A scientist is conducting an experiment to see how the weight of a car affects its fuel efficiency. What is the dependent variable in this experiment?

• The weight of the car

• The type of fuel used

• The fuel efficiency of the car

• The color of the car

Tags

NGSS.MS-PS2-2

Otto pushed a toy car across a floor. The car traveled fast across the wood, but it slowed to a stop on the carpet. Which BEST explains what happened when the car reached the carpet?

• Inertia decreased.

• Gravity increased

• Friction increased.

• Magnetism decreased

Tags

NGSS.3-PS2-1

A car is moving at a constant speed on a straight road. What force is primarily responsible for keeping the car moving at this speed?

• A) Gravity

• B) Friction

• C) Engine force

• D) Air resistance

Which of the following energy transformations occurs when a car engine is running?

• A) Electrical to mechanical

• B) Chemical to mechanical

• C) Mechanical to thermal

• D) Thermal to electrical

Tags

NGSS.MS-PS3-5

A car accelerates from rest to 60 km/h in 10 seconds. What is the average acceleration of the car?

• A) 6 km/h/s

• B) 10 km/h/s

• C) 60 km/h/s

• D) 600 km/h/s

Tags

NGSS.HS-PS2-1

What is the primary reason a car's tires are designed with treads?

• A) To increase speed

• B) To reduce noise

• C) To improve grip on the road

• D) To enhance appearance

Tags

NGSS.MS-ETS1-1

In a crash test, a car hits a wall and comes to a stop. What happens to the kinetic energy of the car?

• A) It is destroyed

• B) It is converted to potential energy

• C) It is converted to thermal energy and sound

• D) It remains the same

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A car is traveling uphill. Which force is working against the motion of the car?

• A) Gravity

• B) Friction

• C) Engine force

• D) Air resistance

Tags

NGSS.MS-PS2-4

What is the role of a catalytic converter in a car?

• A) To increase engine power

• B) To reduce exhaust emissions

• C) To improve fuel efficiency

• D) To enhance speed

Tags

NGSS.HS-ETS1-1

NGSS.HS-ETS1-3

Which part of the car is primarily responsible for converting chemical energy into mechanical energy?

• A) Battery

• B) Engine

• C) Transmission

• D) Exhaust