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Somebody who studies the weather is called a meteorologist.

Investigating - Changes over Time

Watch how things change. In this quiz, you'll explore shadows, plants, weather and more, spotting patterns by looking carefully over minutes, hours and days.

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Fascinating Fact:

Looking at changes over time in shadows, we notice our shadow is long in the morning, shorter at lunchtime, and long again later in the day.

In KS1 Science, you learn to be a young scientist by watching how things change. Shadows, plants, and even the weather can be observed carefully over time to spot patterns.

Key Terms

Observation: Carefully looking at something to see what happens or changes.
Pattern: A change that happens in a regular way, such as shadows getting shorter then longer.
Prediction: A sensible guess about what you think will happen next based on what you have seen.

Frequently Asked Questions (Click to see answers)

What does "changes over time" mean in KS1 science?

In KS1 science, "changes over time" means watching something for minutes, hours, days or longer to see how it is different, such as a shadow moving or a plant growing.

How can children investigate changes over time in the classroom?

Children can draw daily shadow positions, measure plant growth each week, or check the weather chart every day, then compare results to spot simple patterns.

Why do scientists observe shadows at different times of the day?

Scientists observe shadows at different times to see how the Sun’s position changes. This helps show that shadows move and change length in a regular pattern.

Try These Related Quizzes

1 .

Dylan is growing a sunflower. He measured its height. On the 1st of July it was 80 cm high. On the 14th of July it was 120 cm high. How much had it grown in that time?

14 cm

20 cm

40 cm

200 cm

How many weeks is it from the 1st of July to the 14th of July?

2 .

Becky is 7 years old. Becky is 125 cm tall.

Her sister, Lucy, is 5 years old. Lucy is 105 cm tall.

How much taller is Becky than Lucy?

10 cm

15 cm

20 cm

25 cm

How much older is Becky than Lucy?

3 .

Tanya kept a weather diary. Every day for a week she found out how much rain had fallen. Tanya used a rain-gauge. Here are her results:

Mon 2 mm, Tue 3 mm, Wed 0 mm, Thu 7 mm, Fri 11 mm, Sat 12 mm, Su 11 mm

What was the wettest day that week?

Monday

Wednesday

Saturday

Sunday

On what day did it not rain?

4 .

Have another look at Tanya's results:

Mon 2 mm, Tue 3 mm, Wed 0 mm, Thu 7 mm, Fri 11 mm, Sat 12 mm, Su 11 mm

How did the weather change over the week?

It became drier

It became windier

It became warmer

It became wetter

We don’t know about the wind and the cold because we don’t have Tanya’s results for those

5 .

Every morning, Olivia checks the thermometer outside school. On Monday it said 12^oC. But on Tuesday it said 3^oC. How much colder was Tuesday morning than Monday morning?

3^oC

6^oC

9^oC

12^oC

Water freezes when it reaches 0^oC

6 .

Evie is checking when it goes dark at night. On the 1st of January it was dark at 4 o’clock in the afternoon. On the 1st of February it was dark at 5.30 in the afternoon. What does Evie say is happening to the nights?

The nights are the same length

The nights are getting longer

The nights are getting shorter

The nights are not changing

What time does it say on the clock in the picture?

7 .

Maria asked, ‘Do different colours of paint take longer to dry?’

Maria and her friends investigated this. They used three colours. They timed how long they took to dry. Here are their results:

Orange 45 minutes
Green 45 minutes
Red 45 minutes

What did Maria say about their results?

‘Different colours of paint do not take longer to dry’

‘Different colours of paint do take longer to dry’

‘The colour of paint changes how long it takes to dry’

‘Red is the brightest colour, so it took longer to dry’

What do you think would happen if they tried yellow or blue paint?

8 .

Two years ago, Maria’s Mum hung red curtains in their window. The curtains have faded. What colour are they now?

Green

Blue

Grey

Pink

Red colours often fade in sunlight

9 .

Tom asked, ‘When do most leaves fall off the trees?’

He measured the depth of leaves on the floor of a wood. Here are his results:

January: 6 cm, April: 4 cm, July: 1 cm, October: 12 cm

When do most leaves fall off the trees?