Plant Needs
What is one thing every plant needs to grow?
Water, sunlight, air, or soil.
What part of the plant grows underground?
Roots
Name one thing you can observe about a plant.
Color, height, leaves, stem, roots
What are we growing?
Cress plants or peppergrass
What is a variable?
The one thing you change in an experiment.
Plants use this to make their own food.
Sunlight
Which part grows from the stem and makes food for the plant?
Leaves
Why is it important to observe plants every week?
To see how they change and grow.
How many scoops of water does V cup get.
2
What is a hypothesis?
An educated guess
What happens if a plant doesn't get enough water?
It wilts, dries out, or may die.
Which part holds the plant up?
The stem
If one plant is taller than another, is that a similarity or a difference?
A difference
Why are we changing only one thing in our experiment?
So we know what caused the difference.
What is an observation?
Something you notice using your senses or by measuring.
Which plant would likely grow better: one with water or one with lemon juice?
Water
Name four parts of a plant.
Roots, stem, leaves, flower
Give one quantitative observation about a plant.
EX: The plant is 8 cm tall. It has 6 leaves.
What stayed the same in our experiment?
The seeds, cups, soil, location, sunlight, air, space
What is a control?
The part of the experiment that stays the same
Can plants survive if they only have water but no sunlight? Explain.
No. They need sunlight to make food and stay healthy.
What is the job of the roots?
to absorb water and nutrients and hold the plant in the ground.
Why is it important to observe your plant every week?
To record changes, collect data, and see how the plant grows over time
Why do scientists only change one variable?
So they know what caused the results.
What is the difference between a qualitative observation and a quantitative observation?
Qualitative observations describe something using your senses. Quantitative observations use numbers or measurements.