MEDIUM
Lower Secondary Stage 7
IMPORTANT
Earn 100

The graph shows how the temperature of some water is changing.

Question Image 

Copy and complete this table.

Time (min) 0 5 10 15 20 25
Temperature (°C)       33   31

 

Important Questions on Graphs

MEDIUM
Lower Secondary Stage 7
IMPORTANT

The graph shows how the temperature of some water is changing.

Question Image 

The water is not cooling at the same rate all the time. Describe how the rate of cooling change. Give a reason for your answer.

MEDIUM
Lower Secondary Stage 7
IMPORTANT

The graph shows how the temperature of some water is changing.

Question Image 

The water stops cooling when it is at room temperature. Use the graph to estimate room temperature.

MEDIUM
Lower Secondary Stage 7
IMPORTANT

The graph shows how the temperature of some water is changing.

Question Image 

The gradient of the curve varies.
Describe when the gradient is positive.

MEDIUM
Lower Secondary Stage 7
IMPORTANT

The graph shows how the temperature of some water is changing.

Question Image 

The gradient of the curve varies.
Describe when the gradient is negative.

MEDIUM
Lower Secondary Stage 7
IMPORTANT

The graph shows how the temperature of some water is changing.

Question Image 

The gradient of the curve varies.
Describe when the gradient is zero.

EASY
Lower Secondary Stage 7
IMPORTANT

Question Image

A vase has the shape of a cylinder. The vase is being filled at a constant rate with water from a tap.

Question Image

This graph shows how the depth of the water in the vase changes with time.

Find the sum of the depth of water(in cm) after 20 seconds.

EASY
Lower Secondary Stage 7
IMPORTANT

Question Image

A vase has the shape of a cylinder. The vase is being filled at a constant rate with water from a tap.

Question Image

This graph shows how the depth of the water in the vase changes with time.

When (in seconds) is the depth 30 centimetres?

MEDIUM
Lower Secondary Stage 7
IMPORTANT

Question Image

A vase has the shape of a cylinder. The vase is being filled at a constant rate with water from a tap.

Question Image

This graph shows how the depth of the water in the vase changes with time.

Work out the rate at which the depth is increasing, in centimetres per second.