Grade 7 : Science (Curiosity) - 8. Time and Motion (Set 1)

Question 1

Which of the following describes an object that is in motion?

Accepted Answer

A) Its position changes with respect to a stationary reference point.

Answer

B) It remains in the same place.

Answer

C) It is observing another object move.

Answer

D) It is an imaginary object.

Question 2

What is the standard unit for measuring time in the International System of Units (SI)?

Accepted Answer

C) Second

Answer

A) Hour

Answer

B) Minute

Answer

D) Day

Question 3

A car travels a distance of 120 kilometers in 2 hours. What is its average speed?

Accepted Answer

B) 60 km/h

Answer

A) 40 km/h

Answer

C) 80 km/h

Answer

D) 120 km/h

Question 4

Which type of motion involves an object covering equal distances in equal intervals of time?

Accepted Answer

A) Uniform motion

Answer

B) Non-uniform motion

Answer

C) Random motion

Answer

D) Oscillatory motion

Question 5

A boy runs for 30 minutes. How many seconds did he run?

Accepted Answer

D) 1800 seconds

Answer

A) 300 seconds

Answer

B) 900 seconds

Answer

C) 1200 seconds

Question 6

Which of these devices is primarily used to measure time intervals?

Accepted Answer

B) Stopwatch

Answer

A) Ruler

Answer

C) Thermometer

Answer

D) Balance

Question 7

An object is said to be at 'rest' if:

Accepted Answer

A) Its position does not change with respect to a stationary reference point.

Answer

B) It is moving very slowly.

Answer

C) It has just started to move.

Answer

D) It is being observed by another moving object.

Question 8

A train travels at a constant speed of 80 km/h. How much distance will it cover in 3 hours?

Accepted Answer

D) 240 km

Answer

A) 160 km

Answer

B) 180 km

Answer

C) 200 km

Question 9

If an object's speed changes over different intervals of time, what type of motion is it exhibiting?

Accepted Answer

B) Non-uniform motion

Answer

A) Uniform motion

Answer

C) Circular motion

Answer

D) Periodic motion

Question 10

Which concept measures how fast an object is moving?

Accepted Answer

C) Speed

Answer

A) Distance

Answer

B) Time

Answer

D) Acceleration