final science competition grade 4

I am a type of animal that has a backbone and can breathe air. I am known for my warm blood and my ability to give birth to live young. What am I?

• Reptile
• Mammal
• Bird
• Fish

The organism that hunts for food is a

• herbivore
• scavenger
• decomposer
• predator

what cause different seasons on earth ?

• The tilt of the Earth's axis and its orbit around the Sun cause different seasons.
• Different seasons are caused by ocean currents.
• The Earth's rotation speed affects seasonal changes.
• The distance from the Sun changes throughout the year.

long sleep of the animal during winter is called ------------

• estivation
• migration
• hibernation
• sleepwalking

What is the main function of blood?

• To regulate body temperature.
• The main function of blood is to transport oxygen and nutrients throughout the body.
• To produce hormones for digestion.
• To store waste products for elimination.

I'm a chemical change that happens because of the interaction between iron and oxygen. What am I?

• Iron oxide
• Corrosion
• Oxygenation
• Rust

Which of the following is in the correct order from smallest to largest unit of living things?

• cell, tissue, organ, organ system, organism
• organ, cell, tissue, organism, organ system
• tissue, organism, organ system, organ, cell
• organ system, organ, tissue, cell, organism

What phenomenon occurs when the Moon passes between the Earth and the Sun?

• Planetary alignment
• Solar eclipse
• Lunar eclipse
• Meteor shower

Which of the following is NOT a form of energy?

• Light
• Time
• Heat
• Sound

Which planet is known as the "Red Planet"?

• Jupiter
• Mars
• Venus
• Saturn