Science Quiz on Gravity and Mixtures

What is the primary function of the circulatory system?

• To digest food

• To transport materials to and from cells

• To protect the body from infection

• To control body temperature

Which of the following best describes a homogeneous mixture?

• A mixture with visible different components

• A mixture that has a uniform composition

• A mixture that can be easily separated

• A mixture that contains only one type of substance

How does gravity affect objects in motion?

• It has no effect on their motion

• It makes them move faster than light

• It pulls them towards the center of the Earth

• It causes them to float indefinitely

What is one way to increase friction?

• Using lubricants

• Using wet surfaces

• Using rough surfaces

• Using smooth surfaces

Which of the following is a characteristic of vertebrates?

• They do not have backbones

• They are all cold-blooded

• They can only live in water

• They have an internal backbone

What is the primary force that pulls objects toward the center of the Earth?

• Friction

• Lift

• Gravity

• Magnetism

Which season in the Philippines is characterized by heavy rainfall?

• Dry season

• Rainy season

• Cool dry season

• Hot dry season

What happens to the force of gravity when two objects are closer together?

• It decreases

• It disappears

• It remains the same

• It increases

Which planet is known as the 'Red Planet'?

• Jupiter

• Saturn

• Mars

• Venus

How does the tilt of the Earth affect the seasons?

• It has no effect on seasons

• It causes day and night

• It changes the amount of sunlight received

• It affects the gravity on Earth