Summer Exam Yr10

Question 1

Why do we have day and night

Answer 1

Day is when we face the sun and night is when the sun faces the other 1/2 of the earth

Question 2

Planets

Answer 2

Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus.
Neptune

Question 3

What is a galaxy

Answer 3

A collection of gas dust, stars and their solar system

Question 4

What is gravity

Answer 4

An invisible force that pulls objects towards the earths core

Question 5

What is the equation for weight

Answer 5

Weight = mass x gravitational pull

Question 6

What are shadows

Answer 6

When the sun is High in the sky

Question 7

Bulb symbol

Answer 7

In book

Question 8

Switch symbol

Question 9

Voltmeter

Question 10

Ameter

Question 11

Resistor

Question 12

Variable resistor

Question 13

Series circuit

Question 14

Parallel

Question 15

Attracted magnets

Question 16

Repel magnets

Question 17

Electromagnet

Question 18

What is pressure

Answer 18

A force exerted over a surface

Question 19

How is pressure calculated

Answer 19

Pressure = force / area

Question 20

What is the unit of pressure

Answer 20

Pa or N/m2

Question 21

High pressure and low pressure examples

Answer 21

High - thumb pins, stiletto heel
Low - tractor tiles, ballon on bed of nails

Question 22

What is density

Answer 22

The mass of objects per unit volume

Question 23

How is density calculated

Answer 23

Density = mass / volume

Question 24

How do u find density of a irregular/regular shape object

Answer 24

Regular - calculate volume
Irregular - displacement method (volume before and after)

Question 25

What is a longitudinal wave

Answer 25

Vibrations travel in the direction of wave

Question 26

Look at wave diagram

Question 27

What should u do when drawing reflection I’m a plane mirror

Answer 27

Draw a normal line Always measure from normal line to beam of light Put direction arrows on beam of light Angle of I=r

Question 28

I=R meaning

Answer 28

I= angle of incident R= angle of reflection

Question 29

What happens when light travels from air into a denser medium like glass or water?

Answer 29

It refracts towards the normal

Question 30

What happens when light travels from air denser medium into air

Answer 30

It will refract away from the normal

Question 31

Look at reflection diagrams