Doing Scientific Investigations

Which scientist is known for formulating the laws of motion and universal gravitation?

• Albert Einstein

• Galileo Galilei

• Sir Isaac Newton

• James Clerk Maxwell

In a science fair, Maya is presenting her project on the interactions between matter and energy. She explains how different forces affect the movement of objects and how energy can change forms. Her project showcases various experiments that illustrate these principles.

• Biology

• Chemistry

• Economics

• Physics

In a science fair, students presented their projects on various subjects. All except one of the following students focused on sub-branches of Science.

• Grace presented on Botany

• Benjamin showcased Chemistry

• Jackson discussed Economics

• Grace explained Zoology

In a scientific study conducted by Zoe, she wanted to test the effect of a new fertilizer on plant growth. To ensure accurate results, she set up a part of her experiment without using the new fertilizer.

• Alternative Group

• Control Group

• Experimental Group

• Null Group

Arjun is conducting an experiment to determine the best fertilizer for his garden. He believes that using organic fertilizer will result in healthier plants. What do you call the simple statement that presents the possible solution to the problem?

• Hypothesis

• Law

• Prediction

• Theory

In the research problem "Effect of Aloe Vera to the Inhibition Zone of E. coli", the dependent variable is the

• growth of E. coli

• amount of Aloe Vera

• temperature

• humidity

Emma noticed that every time she dropped a ball from a certain height, it always bounced back to a predictable height. An attempt to explain this pattern observed repeatedly in the natural world is called

• hypothesis

• law

• prediction

• theory

During a chemistry experiment, Charlotte needs to heat a test tube containing a chemical solution. To ensure her safety and avoid burns, she reaches for a laboratory tool that is specifically designed to grip test tubes while being heated.

• Test tube holder

• Test tube rack

• Ring stand

• Tongs

In a chemistry lab, Sophia needs to transfer a small amount of liquid from one container to another for her experiment.

• Burette

• Erlenmeyer flask

• Funnel

• Pippette

During a chemistry lab session, Ava noticed some unsafe practices among her classmates. She observed that one of them was holding a double-edged razor when it was not in use. Which of the following is an improper way of handling laboratory tools?

• Use clamps, tongs, or any heat-resistant gloves to handle objects.

• Point a bottle or test tube away from you and others when it is being heated.

• Hold double-edged razors when not in use.

• Close all lids when chemicals are not in use.