What are the units used to measure longer distances and large masses?

QUESTION 16:
A measuring cylinder is a laboratory tool used to accurately measure the volume of liquids.
The correct option is C.

$$\boxed{\text{C. volume}}$$

QUESTION 17:
Oil floats on water because it is less dense than water, and it does not dissolve in water, allowing it to form a separate layer on top.
The correct option is D.

$$\boxed{\text{D. oil is both less dense and does not dissolve in water.}}$$

QUESTION 18:
There are 60 minutes in 1 hour.
To find the number of minutes in 3 hours, multiply 3 by 60.

$$3 \text{ hours} \times 60 \text{ minutes/hour} = 180 \text{ minutes}$$

The correct option is B.

$$\boxed{\text{B. 180 minutes}}$$

QUESTION 19:
Longer distances are measured in kilometres. Large masses are typically measured in tonnes (also known as metric tons), which are equal to 1000 kilograms.
The correct option is B.

$$\boxed{\text{B. tonnes}}$$

QUESTION 20:
The gravitational force that acts upon an object is defined as its weight.
The correct option is C.

$$\boxed{\text{C. weight}}$$