SI unit of density is ________.

(a)

kg/m²

(b)

kg/m³

(c)

kg/m

(d)

g/m³

Two spheres have equal mass and volume in the ratio 2:1. The ratio of their density is ________.

(a)

1:2

(b)

2:1

(c)

4:1

(d)

1:4

Light year is the unit of ________.

(a)

Distance

(b)

time

(c)

density

(d)

both length and time

The unit of volume is ____________

(a)

m³

(b)

m²

(c)

cm³

(d)

km

The shortest distance between the earth and the sun is called as _______ position.

(a)

Light year

(b)

normal

(c)

perihelion

(d)

aphelion

Give the formula to find the density of objects.

Name the liquid in which an iron ball sinks.

What is the area of 10 squares each having side of 1 m?

Mention the formula to calculate area of a circle?

How will you determine the volume of a liquid?

What are derived quantities?

Distinguish between the volume of liquid and capacity of a container.

A box is made up of iron and it has a volume of 125 cm³. Find its mass. (Density of iron is 7.8 g / cm³).

A sphere is made from copper whose mass is 3000 kg. If the density of copper is 8900 kg/m, find the volume of the sphere.

Define astronomical unit

How will you determine the density of a stone using a measuring jar?

How will you find the area of irregular objects?