Science

P3 Heat

Sources of heat are things that produce heat,

heat makes things warm

Besides the Sun

There are other of sources of heat,

1. Burning gas

2. An Oven

3. Burning Wood

4. Hot Iron

Multiple Choice

................... is our MAIN source of heat

• Lit candle

• Sun

• an oven

Fill in the Blanks

One of the function of heat from Sun is to keep the Earth and living things

with the light and temperature

Multiple Choice

Beside the SUn , there are other sources of heat such as burning wood, burning gas, and electrical equipment or appliances such as an ......... and irons

• ceramic pot

• hot pot

• Oven

Using heat from the Sun from people, animals and plants

People use heat from the Sun to dry many objects like wet clothes, shoes, and mattresess ,

Animals

Some animals depend on the heat from the Sun to keep their body warm.

Plants

Plants need heat from the Sun to live and grow, seed only start to grow when there is warmth from the Sun

Multiple Choice

These are the uses heat of Sun for People, except ...

• dry clothes

• gather water from rain

• use special panels on rooftops to gather the heat

Fill in the Blanks

Based in this picture, plants need heat from Sun to ..... and ......

Effect of too little heat and too much heat from the Sun

Too little as well as too much heat from the Sun can affect people, animals and plant

On People

If we get too little heat from the Sun:

- We will feel cold and we may even shiver if we get too little heat from the Sun

How to avoid getting hurt from too much heat ?

On Animals

-some animals move away from their homes to warmer places in the winter months to avoid the cold weather

-other animals become inactive and hiberbate throughout the winter months to conserve energy

On Plants

-if plants get too little heat from the Sun,

they will not be able to make enough food to grow properly

-some plants will stop growing shoots and flowers

-seeds will also not start to grow if there is too little heat from the Sun

Sunflowers

if there is too much heat from the Sun, plants will lose a lot of water from their leaves

Multiple Choice

In winter, people will wear ........... clothes to keep their body warm, because in winter condition they will get too little heat from the Sun

• thinner

• thicker

• same

Multiple Choice

When we are out in the Sun for long we should drink ........... of water to ....... the water that our body loses when we perspire

• little, replace

• plenty, reduce

• little, add

• plenty, replace

Multiple Choice

.............. is the activity of some animals when winter come, they will become inactive months to conserve energy

• avoid

• hide

• stay

• hibernate

Multiple Choice

Sunflower will be wilting because of ...... heat from the Sun

• too much

• too little

• same