Life Cycles
What do plants need to grow?
Sunlight, water, air (carbon dioxide), and nutrients from the soil.
What happens when you heat ice?
It melts and turns into water.
What is the name of the planet we live on?
Earth.
Can you name three parts of the human body?
e.g. Head, arms, and legs.
What does a magnet stick to?
It sticks to iron and some other metals.
Can you name the stages of a butterfly's life cycle?
Egg, larva (caterpillar), pupa (chrysalis), and adult (butterfly).
Can you name three different types of materials?
Wood, metal, and plastic...
Name 4 phases of The Moon.
New moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter (half moon), and waning crescent.
What do all animals need to survive?
Food, water, air, and shelter.
Can you name a force that can push or pull?
Gravity.
What is the difference between the life cycle of a mammal and an insect?
Mammals typically give birth to live young, which then grow into adults. Insects may go through a metamorphosis, including stages like larva and pupa, before becoming adults.
What happens during the process of evaporation?
Liquid water turns into water vapor (gas) when heated.
How does the Earth rotate and what effect does this have?
The Earth spins on its axis, causing day and night.
How does the heart work in the human body?
The heart pumps blood throughout the body, delivering oxygen and nutrients to cells.
How do magnets repel each other?
Like poles (north-north or south-south) of magnets push away from each other.
How do seeds grow into plants?
Seeds germinate when they receive water and warmth. The seed sprouts roots to absorb water and nutrients, and shoots to reach sunlight.
Explain the difference between reversible and irreversible changes with examples.
Reversible changes can be undone, like melting ice (water to ice). Irreversible changes cannot be undone, like burning wood (wood to ash).
What causes day and night?
The rotation of the Earth on its axis causes different parts of the Earth to face the Sun, creating day and night.
What are the main functions of the human skeleton?
The skeleton supports the body, protects internal organs, and allows movement.
What are the effects of friction on moving objects?
Friction slows down moving objects and can generate heat.
Explain why certain plants need animals for pollination.
Some plants rely on animals, like bees and butterflies, to transfer pollen from one flower to another for fertilization. This helps produce seeds and fruits.
How does metal change when it rusts?
Metal, particularly iron, reacts with oxygen and water to form rust, a reddish-brown substance that weakens the metal.
Explain why we have different seasons.
The tilt of the Earth's axis and its orbit around the Sun cause different parts of the Earth to receive varying amounts of sunlight throughout the year, leading to seasons.
Explain how the digestive system works.
The digestive system breaks down food into nutrients that the body can use for energy, growth, and repair. It includes the mouth, esophagus, stomach, intestines, and other organs.
Explain how a lever makes it easier to lift heavy objects.
A lever allows a smaller force to lift a heavier load by increasing the distance over which the force is applied.