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Science 3rd grade | UNIT 1: Looking after plants 1.4 Plants growth and temperature

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visibility 193update 2 years agobookmarkshare

Words to learn

thermometer - temperature - results - bar chart - conclusion

You will need: two similar bean plants - a thermometer - a ruler

Set up an investigation like one of the pictures below.

Predict which plant will grow the best. Use a ruler to measure the height of the plants and a thermometer to measure the temperature every few days. Record your results in a table.

Warm plant		Cold/hot plant		Day
Height in cm	Temperature in °C	Height in cm	Temperature in °C	Day
				I

Draw a bar chart to show the height of the plants on the last day.
What is your conclusion? At what temperatures do plants grow best?

Think about the place you live. Is there enough warmth for plants to grow?
When is the warmest time of year? When is the coldest/
can plants grow all year?

At over 56 °C , Death Valley in America is one of the hottest places on Earth

At -89 °C , Antarctica is the coldest place on Earth

This is a rainforest. Many plants find it easy to grow here. It is warm but not too hot and there is plenty of water

1) Where do plants grow best? Cold places, hot places or warm places?
2) What happens when a plant gets too hot?
3) How is plant growth affected by temperature?

What you have learnt

- Plants grow more slowly when it is cold.
- Plants grow more quickly when it is warm.
- Plants die when they too cold or too hot.

Talk about it!

Why are there no plants in Death Valley or Antarctica?

Science 3rd grade | UNIT 1: Looking after plants 1.4 Plants growth and temperature

Activity 1.4 (At which temperatures do plants grow best?)

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