1
What causes day and night?
Rotation of Earth around its axis.
Twins that do not look alike are called?
Fraternal twins
How many phases of the moon are there ?
Eight
Which is the smallest bird?
Hummingbird
Defence mechanism through which animals hide or blend in their surroundings is called?
Camouflage
Small rocky objects that orbit the sun are called?
Asteroids
What is everything made of?
Matter
Animals that eat only meat are called?
Carnivorous
What is the invisible force that pulls objects toward each other called?
Gravity
Which is the tallest grass?
Bamboo
How many moons does the Earth have?
One
Which instrument is used to measure fever?
Thermometer
What are preserved remains of plants and animals called?
Fossils
What is the unit of measurement of time?
Seconds
Name the five senses?
Sight, Sound, Smell, Taste, and Touch
How many phases of the moon are there?
Eight
What is the vehicle used to travel to space called?
Spacecraft
Animals that live on other animals are called?
Parasites
Which animal lays the biggest egg in the world?
Ostrich
What is the hardest natural substance on Earth?
Diamond
What is the long winter sleep of animals called?
Hibernation
What is the primary source of energy on our planet?
Sun
What are tiny holes present on the skin, from which hair grow is called?
Follicles
Which is the largest organ of the human body?
Skin
Can an airplane go in reverse?
Yes