Grade 4 science revision

Anita investigates how quickly water evaporates. She does her experiment 3 times. What variable is she CHANGING?

• The volume (amount) of water.

• The temperature of the water.

• The size of the beakers.

• The time she leaves the beakers for.

To find out which soil holds the most water, which variable is most important to keep the same?

• The volume (amount) of water added.

• The volume (amount) of water drained.

• The shape of the beaker.

• The size of the beaker.

It is best for a bike frame to be light and strong. Which metal would be best for a bike frame?

• Aluminium-strong (3g)

• Iron - strong (8g)

• copper - weak (9g)

• zinc - strong (7g)

A boy observes a hard, shiny and hard to break object. What is this object made from?

• Paper

• metal

• Plastic

• glass

What happens to your heart rate when you exercise?

• When people exercise their heart rates increase.

• Their temperature decreases (gets lower)

• Their muscles get longer.

• Their bodies get stronger.

Which of these cannot be separated by a sieve?

• pasta and water

• meatballs and sauce

• juice and fruit

• oil and vinegar

What happens to the lamp when you open the switch?

• It lights up

• It turns off

• It becomes dim (less bright)

• It becomes hot

Which mixture can be separated by filtering?

• sand and water

• salt and sugar

• oil and vinegar

• flour and rice

Which equipment would you use to measure the volume of rain collected in a jug?

• measuring cylinder

• scale

• thermometer

• ruler

What role do honeybees play in the life cycle of some flowering plants?

• Honeybees help spread some plant seeds.

• Honeybees help plants reproduce.

• Honeybees help to make plants’ food.

• Honeybees help to protect the plant.